Selected Papers 


126. S. Liu, L. H & Z.J.M. Shen (2020). On-Time Last Mile Delivery: Order Assignment with Travel Time Predictors. Accepted, Management Science.


125. A Ninh, ZJM Shen, MA Lariviere (2019). Concavity and unimodality of expected revenue under discrete willingness to pay distributions. Accepted by Production and Operations Management.


124. He, L., Rong, Y., & Shen, Z. J. M. (2020). Product Sourcing and Distribution Strategies under Supply Disruption and Recall Risks. Published in Production and Operations Management.


123. Shen, Z.J.M., C. Tang, D. Wu, R. Yuam & W. Zhou (2020). Transaction Level Data for the 2020 MSOM Data Driven Research Challenge. To appear in Manufacturing & Service Operations Management.


122. Yu, J., C.S. Tang, Z.J.M. Shen, X. Chen (2019). A Balancing Act of Regulating On-demand Ride Services. Accepted by Management Science.


121. Han, J., Xu, Y., Liu, D., Zhao, Y., Zhao, Z., Zhou, S., Deng, T., Xue, M., Ye, J. & Shen, Z. J. M. (2019). Operations Research Enables Better Planning of Natural Gas Pipelines. INFORMS Journal on Applied Analytics, 49(1), 23-39. (Edelman Finalist paper).


120. S. Zhang, S. Liu, T. Deng, Z.J.M. Shen (2019). Transient-State Natural Gas Transmission in Gunbarrel Pipeline Networks. To Appear in INFORMS Journal on Computing


119. M Xue, T Deng, Z.J.M. Shen (2019). Optimizing Natural Gas Pipeline Transmission with Non-uniform Elevation: A New Initialization Approach. Naval Research Logistics 66 (7), 547-564


118. S Hasija, ZJM Shen, CP Teo (2019). Smart City Operations: Modelling Challenges and Opportunities. To appear in Manufacturing & Service Operations Management


117. X Zhao, D Si, W Zhu, J Xie, ZJM Shen (2019). Behaviors and Performance Improvement in a Vendor-Managed Inventory Program: An Experimental Study. Production and Operations Management 28 (7), 1818-1836


116. H Shen, Y Liang, ZJM Shen (2019). Reliable Hub Location Model for Air Transportation Networks under Random Disruptions. To appear in Manufacturing & Service Operations Management


115. C Wang, F He, X Lin, ZJM Shen, M Li (2019). Designing locations and capacities for charging stations to support intercity travel of electric vehicles: An expanded network approach. Transportation Research Part C: Emerging Technologies 102, 210-232


114. ZJM Shen, B Feng, C Mao, L Ran (2019). Optimization models for electric vehicle service operations: A literature review. To appear in Transportation Research Part B: Methodological


113. Y Cao, ZJM Shen (2019). Quantile forecasting and data-driven inventory management under nonstationary demand. To appear in Operations Research Letters


112. Y Lin, K Zhang, ZJM Shen, B Ye, L Miao (2019). Multistage large-scale charging station planning for electric buses considering transportation network and power grid. Transportation Research Part C: Emerging Technologies 107, 423-443


111. Cao, J., M. Olvera-Cravioto, and Z.J.M (2019). Shen.Last-mile Shared Delivery: A Discrete Sequential Packing Approach. To appear in Mathematics of Operations Research.


110. Liang, Y., T. Deng, and Z.J.M. Shen (2018). Demand-Side Energy Management under Dynamic Pricing. Accepted by IISE Transactions.


109. He, Q., Y.-J. Chen, and Z.J.M. Shen (2018). On the formation of producers' information sharing coalitions. Accepted by Production and Operations Management.

108. Berenguer, G. and Z.J.M. Shen (2018). Challenges and strategies in managing nonprofit operations: An OM perspective. Accepted, Manufacturing & Service Operations Management.

107. Tonissen, D., J.J..Arts, .and Z.J.M. Shen (2018). Maintenance location routing for rolling stock under line and fleet planning uncertainty. Accepted, Transportation Science.

106. Aswani, A., Z.J.M.Shen, & A. Siddiq. (2018). Data-Driven Incentive Design in the Medicare Shared Savings Program. Accepted, Operations Research.

105. Mao, C. and Z.J.M. Shen. (2018). A Reinforcement Learning Framework for the Adaptive Routing Problem in Stochastic Time-dependent Network. Accepted, Transportation Research Part C

104. Shen, H., Y. Liang, Z.J.M.Shen, & C.P. Teo. (2018). Reliable Flexibility Design of Supply Chains via Extended Probabilistic Expanders. Production and Operations Management 28 (3), 700-720

103. Qi, W. and Z.J.M.Shen. (2018). A Smart-City Scope of Operations Management. Accepted by Production and Operations Management.

102. Aswani, A., Z.J.M.Shen, & A. Siddiq. (2018). Inverse Optimization with Noisy Data. Accepted, Operations Research.

101. Qi, W., L. Li, S. Liu, & Z.J.M. Shen. (2018). Shared Mobility for Last-Mile Delivery: Design, Operational Prescriptions and Environmental Impact. Accepted, Manufacturing & Service Operations Management.

100. Yu, J., C. Tang, & Z.J.M. Shen. (2018). Improving Consumer Welfare and Manufacturer Profit via Government Subsidy Programs: Subsidizing Consumers or Manufacturers? Accepted, Manufacturing & Service Operations Management.

99. Y. Zhang, S. Song, Z.J.M. Shen (2017). Robust Shortest Path Problem with Distributional Uncertainty. IEEE Transactions on Intelligent Transportation Systems, 2017, Available online: 10.1109/TITS.2017.2709798.

98. W. Qi, B. Shen, H. Zhang and Z.J.M. Shen (2017). Coordinating and Sharing Demand-Side Energy Resources - A Conceptual Design. Energy, vol.135,  455-465.

97. Chen, T., Shen, Z.J.M., and Siddiq, A. (2017). Robust Defibrillator Deployment Under Cardiac Arrest Location Uncertainty via Row-and-Column Generation, To Appear, Operations Research. [First Prize, Canadian Operational Research Society Student Paper Competition, 2014. (Awarded to Auyon Siddiq)]

96. W. B. Haskell, J. G. Shanthikumar, and Z.J.M. Shen (2017). Aspects of optimization with stochastic dominance. To appear in Annals of Operations Research.

95. Zhang, Y., Shen, Z.J.M., & Song, S. (2017). Lagrangian relaxation for the reliable shortest path problem with correlated link travel times. To appear, Transportation Research Part B: Methodological

94. Haskell, W. B., J. G. Shanthikumar, & Shen, Z.J.M. (2017). Primal-dual algorithms for optimization with stochastic dominance. SIAM Journal on Optimization, Society for Industrial and Applied Mathematics, Vol. 27, No. 1, pp. 34-66.

93. Li, M., Jia, Y., Shen, Z., & He, F. (2017). Improving the electrification rate of the vehicle miles traveled in Beijing: A data-driven approach. Transportation Research Part A: Policy and Practice, 97, 106-120.

92. Zhao, Y., Zhao, X., & Shen, Z. J. M. (2017). The hot-versus-cold effect in a punishment game: a multi-round experimental study. Annals of Operations Research, 1-23.

91. Feng, W., Wang, C., & Shen, Z. J. M. (2017). Process Flexibility Design in Heterogeneous and Unbalanced Networks: A Stochastic Programming Approach. To Appear, IISE Transactions.

90. He, L., Mak, H. Y., Rong, Y., & Shen, Z. J. M. (2017). Service region design for urban electric vehicle sharing systems. Manufacturing & Service Operations Management. [1st prize, Best Student Paper Award, POMS Hong Kong International Conference 2015 (Awarded to Long He).]

89. Ma, X., Deng, T., Xue, M., Shen, Z. J. M., & Lan, B. (2017). Optimal dynamic pricing of mobile data plans in wireless communications. Omega66, 91-105.

88. Zhao, Y., Zhao, X., & Shen, Z. J. M. (2016). On learning process of a newsvendor with censored demand information. Journal of the Operational Research Society, 67(9), 0.

87. Zhong, F., Xie, J., Zhao, X., & Shen, Z. J. M. (2016). On efficiency of multistage channel with bargaining over wholesale prices. Naval Research Logistics (NRL)63(6), 449-459.

86. Mak, H. Y., & Shen, Z. J. M. (2016). Integrated Modeling for Location Analysis. Foundations and Trends® in Technology, Information and Operations Management, 9(1-2), 1-152.

85. Zhang, Y., Shen, Z. J. M., & Song, S. (2016). Distributionally Robust Optimization of Two-Stage Lot-Sizing Problems. Production and Operations Management, 25(12), 2116-2131.

84. Zhang, Y., Shen, Z. J. M., & Song, S. (2016). Parametric search for the bi-attribute concave shortest path problem. Transportation Research Part B: Methodological, 94, 150-168.

83. Liao, C. S., Lu, S. H., & Shen, Z. J. M. (2016). The electric vehicle touring problem. Transportation Research Part B: Methodological86, 163-180.

82. Lim, M. K., Mak, H. Y., & Shen, Z. J. M. (2016). Agility and proximity considerations in supply chain design. Management Science.

81. Ke, T. T., Shen, Z. J. M., & Villas-Boas, J. M. (2016). Search for information on multiple products. Management Science, 62(12), 3576-3603.

80. Deng, T., Chen, Y. J., & Shen, Z. J. M. (2015). Optimal pricing and scheduling control of product shipping. Naval Research Logistics (NRL),62(3), 215-227.

79. Rong, Y., Chen, Y. J., & Shen, Z. J. M. (2015). The impact of demand uncertainty on product line design under endogenous substitution. Naval Research Logistics (NRL), 62(2), 143-157.

78. He, F., & Shen, Z. J. M. (2015). Modeling taxi services with smartphone-based e-hailing applications. Transportation Research Part C: Emerging Technologies, 58, 93-106.

77. Feng, B., Li, Y., & Shen, Z. J. M. (2015). Air cargo operations: Literature review and comparison with practices. Transportation Research Part C: Emerging Technologies, 56, 263-280.

76. Qi, W., Liang, Y., & Shen, Z. J. M. (2015). Joint Planning of Energy Storage and Transmission for Wind Energy Generation. Operations Research, 63(6), 1280-1293.

75. Chen, Y. J., Shanthikumar, J. G., & Shen, Z. J. M. (2015). Incentive for Peer-to-Peer Knowledge Sharing among Farmers in Developing Economies. Production and Operations Management, 24(9), 1430-1440.

74. Lu, M., Shanthikumar, J. G., & Shen, Z. J. M. (2015). Technical note: operational statistics: Properties and the risk-averse case. Naval Research Logistics (NRL), 62(3), 206-214.

73. Lu, M., Ran, L., & Shen, Z. J. M. (2015). Reliable Facility Location Design Under Uncertain Correlated Disruptions. Manufacturing & Service Operations Management, 17(4), 445-455.

72. Chen, J., Zhao, X., & Shen, Z. J. M. (2015). Risk mitigation benefit from backup suppliers in the presence of the horizontal fairness concern. Decision Sciences, 46(4), 663-696.

71. Schmitt, A. J., Sun, S. A., Snyder, L. V., & Shen, Z. J. M. (2015). Centralization versus decentralization: Risk pooling, risk diversification, and supply chain disruptions. Omega, 52, 201-212.

70. Deng, T., Shen, Z. J. M., & Shanthikumar, J. G. (2014). Statistical Learning of Service-Dependent Demand in a Multiperiod Newsvendor Setting. Operations Research.

69. Zhang, Z. H., Berenguer, G., & Shen, Z. J. (2014). A capacitated facility location model with bidirectional flows. Transportation Science.

68. Mak, H. Y., & Shen, Z. J. M. (2014). Pooling and Dependence of Demand and Yield in Multiple-Location Inventory Systems. Manufacturing & Service Operations Management, 16(2), 263-269.

67. Qi, W., Xu, Z., Shen, Z. J. M., Hu, Z., & Song, Y. (2014). Hierarchical coordinated control of plug-in electric vehicles charging in multifamily dwellings. IEEE Transactions on Smart Grid, 5(3), 1465-1474.

66. T. Ke, Z.-J. M. Shen and S. Li (2013). How Inventory Cost Influences Introduction Timing of Product Line Extensions? Production and Operations Management.Vol.22, No.5, pp.1214-1231.

65. H. Y. Mak, Y. Rong and Z. J. M. Shen (2013). Infrastructure Planning for Electric Vehicles with Battery Swapping. Management Science. Vol.59, No.7, pp.1557-1575.

64. Yano, C. A., Shen, Z. J. M., & Chan, S. (2013). Optimising the number of copies and storage protocols for print preservation of research journals. International Journal of Production Research, 51(23-24), 7456-7469.

63. Haskell, W. B., Shanthikumar, J. G., & Shen, Z. M. (2013). Optimization with a class of multivariate integral stochastic order constraints. Annals of Operations Research, 206(1), 147-162.

62. T. Deng and Zuo-Jun Max Shen (2013). Process Flexibility Design in Unbalanced Networks. M&SOM. Vol. 15, No.1, pp.24-32.

61. Liang, Y., He, L., Cao, X., & Shen, Z. J. (2013). Stochastic control for smart grid users with flexible demand. IEEE Transactions on Smart Grid, 4(4), 2296-2308.

60. Atamturk, G. Berenguer and Z.-J. M. Shen (2012). Integer Programming Approach to Stochastic Joint Location-Inventory Problems. Operations Research. Vol. 60, No.2, pp.366-381.

59. R. Aboolian, T. Cui and Z.-J. M. Shen (2012). An Efficient Approach for Solving Reliable Facility Location Models. INFORMS Journal on Computing. Vol.25, No.4, pp.720-729.

58. X. Chen and Zuo-Jun Max Shen (2012). An Analysis on Supply Chain with Options Contracts and Service Requirements. IIE Transactions. Vol.44, No.10, pp.805-819.

57. Y. Liang, D. Levine and Zuo-Jun Max Shen (2012). Thermostats for SmartGrid: Models, Benchmarks and Insights. The Energy Journal. Vol.33, No.4, pp.61-96. 

56. Y. Rong, Zuo-Jun Max Shen, and C. Yano (2012). Cheaper by the Pallet? Multi-Item Procurement with Standard Batch Sizes. IIE Transactions. Vol. 44, No.6, pp. 405-418.

55. H. Y. Mak and Zuo-Jun Max Shen (2012). Risk Diversification and Risk Pooling in Supply Chain Design. IIE Transactions. Vol. 44, No.8, pp. 603-621.

54. T. Ho, S. Li, S. Park, Zuo-Jun Max Shen (2012). Customer Influence Value and Purchase Acceleration in New Product Diffusion. Marketing Science. Vol.31, No.2, pp. 236-256.

53. Atamturk, G. Berenguer, Zuo-Jun Max Shen (2012). A Conic Integer Programming Approach to Stochastic Joint Location-Inventory Problems. Operations Research. Vol. 60, No.2, pp. 366-381.

52. Vivek Ramamurthy, J. George Shanthikumar, and Zuo-Jun Max Shen (2012). Inventory Policy with Parametric Demand: Operational Statistics, Linear Correction and Regression. Production and Operations Management. Vol. 21, No.2, pp. 291-308.

51. Ying-Ju Chen, J. George Shanthikumar, and Zuo-Jun Max Shen (2012). Training, production, and channel separation in ITC`s e-Choupal network. Production and Operations Management. Vol.22, No.2, pp.348-364.

50. Mak, H. Y., & Shen, Z. J. M. (2011). Integrated Supply Chain Design Models. Wiley Encyclopedia of Operations Research and Management Science.

49. T.C. Sharkey, J. Geunes, H.E. Romeijn, and Zuo-Jun Max Shen (2011). Exact algorithms for integrated facility location and production planning problems. Naval Research Logistics. Vol.58, No.5, pp.419-436.

48. Shen, Z.-J. M., R. Zhan, and J. Zhang (2011). The Reliable Facility Location Problem: Formulations, Heuristics, and Approximation Algorithms. INFORMS Journal on Computing. Vol.23, No.3, pp.470-482.

47. Lv, M., S. Huang and Z.-J. M. Shen(2011). Product substitution and dual sourcing under random supply failures. Transportation Research Part B. Vol.45, No.8, pp. 1251-1265.

46. Schmitt, Amanda J., L. V. Snyder, and Z.-J. M. Shen (2010). Inventory systems with stochastic demand and supply: Properties and approximations. European Journal of Operational Research. Vol.206, No.2, pp. 313-328.

45. Rusmevichientong, P., Z.-J. M. Shen, and D. B. Shmoys (2010). Dynamic Assortment Optimization with a Multinomial Logit Choice Model and Capacity Constraint. Operations Research. Vol.58, No.6, pp.1666-1680.

44. Qi, L., Z.-J. M. Shen, and L. V. Snyder (2010).  The effect of supply disruption on supply chain design decisions. Transportation Science. Vol. 44, No. 2, May 2010, pp. 274-289.

43. Qi, L., & Shen, Z. J. M. (2010). Worst-case analysis of demand point aggregation for the Euclidean p-median problem. European Journal of Operational Research, 202(2), 434-443.

42. Cui, T., Y. Ouyang, and Z.-J. M. Shen (2010).  Reliable Facility Location Design under the Risk of Disruptions. Operations Research. Vol. 58, No. 4-Part-1, pp. 998-1011.

41. Chu, L. Y., & Shen, Z. J. M. (2010). A power-of-two ordering policy for one-warehouse multiretailer systems with stochastic demand. Operations Research, 58(2), 492-502.

40. Mak, H. –Y. and Z. –J. M. Shen (2009). Stochastic Programming Approach to Process Flexibility Design. Journal of Flexible Service and Manufacturing. Vol.21, No.3-Part-4, pp. 75-91.

39. Mak, H. Y., & Shen, Z. J. M. (2009). A two-echelon inventory-location problem with service considerations. Naval Research Logistics (NRL), 56(8), 730-744

38. Rusmevichientong, P., Max Shen, Z. J., & Shmoys, D. B. (2009). A PTAS for capacitated sum-of-ratios optimization. Operations Research Letters, 37(4), 230-238.

37. Rong, Y., Z.-J. M. Shen, and L. V. Snyder.  The impact of ordering behavior on order-quantity variability: A study of forward and reverse bullwhip effects.  (2009), Journal of Flexible Services and Manufacturing, Volume 20, 2008, Pages

36. Shen, Z. J. M., Shu, J., Simchi-Levi, D., Teo, C. P., & Zhang, J. (2009). Approximation algorithms for general one-warehouse multi-retailer systems. Naval Research Logistics (NRL), 56(7), 642-658.

35. Qi, L., Z.-J. M. Shen, and L. V. Snyder (2009). A Continuous-Review Inventory Model with Disruptions at Both Supplier and Retailer. Production & Operations Management, 18 (5), 516–532.

34. E. Romeijn, T. Sharkey, Z.-J. Shen, J. Zhang (2009). Integrating Facility Location and Production Planning Decisions. Networks, 55(2), 78-89. 

33. Z. –J. Shen and X. Su (2008). Customer Behavior Modeling in Revenue Management and Auctions: A Review and New Research Opportunities. Production and Operations Management, 16 (6) 713-728.

32. Chu, L. Y., J. G. Shanthikumar and Z. -J. Shen (2008). Solving Operational Statistics via a Bayesian Analysis. Operations Research Letters, 36(1), pp 110-116.

31. L. Chu and Z.-J. Shen (2008). Truthful Double Auction Mechanisms for e-Marketplace. Operations Research, 56(1), 102-120.

30. J. Geunes, Z.-J. Shen, A. Emir (2007). Planning and Approximation Models for Delivery Route Based Services with Price-Sensitive Demands. European Journal of Operational Research, 183(1), 460-471.

29. L. Qi and Z.-J. Shen (2007). A Supply Chain Design Model with Unreliable Supply.  Naval Research Logistics, 54, 829-844.

28. G. Chen and Z.-J. Shen (2007). Probabilistic Asymptotic Analysis of Stochastic Online Scheduling Problems. IIE Transactions, 39, 525-538.

27. Z.-J. Shen (2007). Integrated Stochastic Supply Chain Design Models. Invited paper, Computing in Science and Engineering, 9 (2), 50-59.

26. Z.-J. Shen and Q. Lian (2007). Incorporating Inventory and Routing Costs in Strategic Location Models. European Journal of Operational Research, 179 (2), 372-389.

25. L. Chu and Z.-J. Shen (2007). Trade Reduction vs. Multi-Stage: A Comparison of Double Auction Design Approaches. European Journal of Operational Research, 180 (2), 677-691.

24. J. Feng, Z.-J. Shen, and L. Zhan (2007). Ranked Items Auctions and Online Advertisement. Production and Operations Management special issue on E-auction and Procurement Operations, 16 (4), 510-522.

23. Z.-J. Shen (2007). Integrated Supply Chain Design Models: An Survey and Future Research Directions. invited paper, Journal of Industrial and Management Optimization., 3 (1), 1-27.

22. Lim, A., J. G. Shanthikumar, and Z. J. Shen (2006). Model Uncertainty, Robust Optimization and Learning. TutORials in Operations Research, H. J. Greenberg (ed.), INFORMS.

21. L. V. Snyder and Z. J. Shen (2006). Managing Disruptions to Supply Chains.  The Bridge (National Academy of Engineering), 36, 4, 39-45.

20. G. Chen, M. Daskin, Z.-J. Shen and S. Uryasev (2006). The a-Reliable Mean-excess Regret Model for Stochastic Facility Location Modeling. Naval Research Logistics, 53 (7), 617-626.

19. L. Chu and Z.-J. Shen (2006). Agent Competition Double Auction Mechanism. Management Science, 52, No. 8, 1215-1222

18. Z.-J. Shen (2006). A Profit Maximizing Supply Chain Network Design Model. Operations Research Letters, 34, 673-682. 

17. T. Magnanti, Z.-J. Shen, J. Shu, D. Simchi-Levi, and C.-P. Teo (2006). Inventory Placement in Acyclic Supply Chain Networks. Operations Research Letters, 34, 228-238.

16. Z. -J. Shen and M. Daskin (2005). Trade-offs Between Customer Service and Cost in Integrated Supply Chain Design. M&SOM, 7, 188-207.

15. L. Chu, V. Hsu, Z.-J. Shen (2005). An Economic Lot-Sizing Problem with Perishable Inventory and Economies of Scale Costs: Approximation Solutions and Worst Case Analysis. Naval Research Logistics, 52, 536-548.

14. Z. -J. Shen (2005). A Multi-commodity Supply Chain Design Problem. IIE Transactions, 37, 753-762. 

13. J. Shu, C.-P. Teo, Z.-J. Shen (2005). Stochastic Transportation-Inventory Network Design Problem. Operations Research, 53, 48-60.

12. A. Chan, Z.-J. Shen, D. Simchi-Levi, J. Swann. (2004)  Coordination of Pricing and Inventory Decisions: A Survey and Classification. Supply Chain Analysis in the eBusiness Era.

11. R. Agarwal, R. Ahuja, G. Laporte, Z.-J. Shen.(2004) A Composite Very Large-Scale Neighborhood Search Algorithm for the Vehicle Routing Problem.  Handbook on Scheduling Algorithms/ Methods/ Models.

10. J. Geunes, Z.-J. Shen, H. E. Romeijn (2004). Economic Ordering Decisions with Market Choice Flexibility.   Naval Research Logistics, 51, 117-136.

9. Y.Z. Wang, L. Jiang, Z.-J. Shen (2004). Channel Performance Under Consignment Contract with Revenue Sharing. Management Science, 50, 34-47.  

8. Z.-J. Shen, C. Coullard, M. Daskin (2003). A Joint Location-Inventory Model. Transportation Science, 37, 40-55.  

7. H. Huang, P. Pardalos, Z.-J. Shen (2002). Equivalent Formulations and Necessary Optimality Conditions for the Lennard–Jones Problem. Journal of Global Optimization, 22(1): 97-118.

6. C. Ma, G. Casella, Z.-J. Shen, T.C. Osborn, R. Wu (2002). A Unified Framework for Mapping Quantitative Trait Loci in Bivalent Tetraploids using Single-dose Restriction Fragments: A Case Study from Alfalfa. Genome Research, 12: 1974-1981.  

5. M. Daskin, C. Coullard, Z.-J. Shen (2002). An Inventory-Location Model: Formulation, Solution Algorithm and Computational Results. Annals of Operations Research, 110, 83-106.

4. A. Chan, A. Muriel, Z.-J. Shen, D. Simchi-Levi, C.-P Teo (2002). Effective Zero-Inventory-Ordering Policies for the Single-Warehouse Multi-Retailer Problem with Piecewise Linear Cost Structures.   Management Science, 48, 1446-1460.  

3. Chan, A. Muriel, Z.-J. Shen, D. Simchi-Levi (2002). On the Effectiveness of Zero-Inventory-Ordering Policies for the Economic Lot-Sizing Model with a Class of Piecewise Linear Cost Structures. Operations Research, 50, 1058-1067.   

2. H. Huang, P. Pardalos, Z.-J. Shen (2001). A Point Balance Algorithm for the Spherical Code Problem. Journal of Global Optimization, 19: 329-344.

1. Y. Hu, Y. Guo, H. Wang, Z.-J. Shen, L. Zheng (1996). Simulation of Lubricant Rheology in Thin Film Lubrication. WEAR, Vol. 196, 249-253.