A particle swarm optimization based algorithm for fuzzy bilevel decision making. - Ya Gao 001; Guangquan Zhang 001; Jie Lu 001 (FUZZ-IEEE, 2008)

A Particle Swarm Optimization Based Algorithm for Fuzzy Bilevel Decision Making with Objective-Shared Followers. - Ya Gao 001; Guangquan Zhang 001; Jie Lu 001 (SEAL, 2008)

A lambda-Cut Approximate Algorithm for Goal-Based bilevel Risk Management Systems. - Ya Gao 001; Guangquan Zhang 001; Jie Lu 001; Tharam S. Dillon; Xianyi Zeng (Int. J. Inf. Technol. Decis. Mak., 2008)

Fuzzy bilevel Programming: Multi-Objective and Multi-Follower with Shared Variables. - Guangquan Zhang 001; Jie Lu 001; Ya Gao 001 (Int. J. Uncertain. Fuzziness Knowl. Based Syst., 2008)

An algorithm for fuzzy multi-objective multi-follower partial cooperative bilevel programming. - Guangquan Zhang 001; Jie Lu 001; Ya Gao 001 (J. Intell. Fuzzy Syst., 2008)

A Fuzzy Bi-level Pricing Model and a PSO Based Algorithm in Supply Chains. - Ya Gao 001; Guangquan Zhang 001; Jie Lu 001; Hui-Ming Wee (ICONIP (2), 2009)

A Fuzzy Bilevel Model and a PSO-Based Algorithm for Day-Ahead Electricity Market Strategy Making. - Guangquan Zhang 001; Guoli Zhang; Ya Gao 001; Jie Lu 001 (KES (2), 2009)

A Decision Making Model for Vendor-Buyer Inventory Systems. - Hui-Ming Wee; Jie Lu 001; Guangquan Zhang 001; Huai-En Chiao; Ya Gao 001 (RSFDGrC, 2009)

A particle swarm optimization based algorithm for fuzzy bilevel decision making with constraints-shared followers. - Ya Gao 001; Guangquan Zhang 001; Jie Lu 001 (SAC, 2009)

A Bilevel Optimization Model and a PSO-based Algorithm in Day-ahead Electricity Markets. - Guangquan Zhang 001; Jie Lu 001; Ya Gao 001; Guoli Zhang (SMC, 2009)

A Fuzzy Multi-Objective bilevel Decision Support System. - Ya Gao 001; Guangquan Zhang 001; Jie Lu 001 (Int. J. Inf. Technol. Decis. Mak., 2009)

A bm Lambda -Cut and Goal-Programming-Based Algorithm for Fuzzy-Linear Multiple-Objective Bilevel Optimization. - Ya Gao 001; Guangquan Zhang 001; Jun Ma 002; Jie Lu 001 (IEEE Trans. Fuzzy Syst., 2010)

Bi-level decision making with fuzzy sets and particle swarm optimisation - Ya Gao 001 (2010)

Particle swarm optimization for bi-level pricing problems in supply chains. - Ya Gao 001; Guangquan Zhang 001; Jie Lu 001; Hui-Ming Wee (J. Glob. Optim., 2011)

Competitive Strategic Bidding Optimization in Electricity Markets Using Bilevel Programming and Swarm Technique. - Guangquan Zhang 001; Guoli Zhang; Ya Gao 001; Jie Lu 001 (IEEE Trans. Ind. Electron., 2011)

A bi-Level Decision Model for Customer Churn Analysis. - Ya Gao 001; Guangquan Zhang 001; Jie Lu 001; Jun Ma 002 (Comput. Intell., 2014)

Multi-Level Decision Making - Models, Methods and Applications - Guangquan Zhang 001; Jie Lu 001; Ya Gao 001 (Springer, 2015)