A vector variational inequality and optimization over an efficient set. - Guang-Ya Chen; Bruce Desmond Craven (ZOR Methods Model. Oper. Res., 1990)

Stability results for Ekeland's e variational principle for vector valued functions. - Guang-Ya Chen; X. X. Huang (Math. Methods Oper. Res., 1998)

Ekeland's ε-variational principle for set-valued mappings. - Guang-Ya Chen; X. X. Huang (Math. Methods Oper. Res., 1998)

Special issue on 'Set-valued optimization': Editors' preface. - Guang-Ya Chen; Johannes Jahn (Math. Methods Oper. Res., 1998)

Optimality conditions for set-valued optimization problems. - Guang-Ya Chen; Johannes Jahn (Math. Methods Oper. Res., 1998)

Approximate fixed points for discontinuous set-valued mappings. - Shui-Hung Hou; Guang-Ya Chen (Math. Methods Oper. Res., 1998)

Equivalents of an approximate variational principle for vector-valued functions and applications. - Guang-Ya Chen; X. X. Huang; Gue Myung Lee (Math. Methods Oper. Res., 1999)

Differential and sensitivity properties of gap functions for vector variational inequalities. - S. J. Li; Hong Yan 002; Guang-Ya Chen (Math. Methods Oper. Res., 2003)

A note on vector network equilibrium principles. - Shengjie Li; X. Q. Yang; Guang-Ya Chen (Math. Methods Oper. Res., 2006)

Vector Ekeland's variational principle in an F -type topological space. - Guang-Ya Chen; X. Q. Yang; Hui Yu (Math. Methods Oper. Res., 2008)

Robust Optimization for the Loss-Averse Newsvendor Problem. - Hui Yu; Jia Zhai; Guang-Ya Chen (J. Optim. Theory Appl., 2016)

Recent Advances. - Guang-Ya Chen; Shengjie Li; Jiuping Xu; Xinmin Yang (J. Optim. Theory Appl., 2018)

Dedication to Benson. - Guang-Ya Chen; Shengjie Li; Jiuping Xu; Xinmin Yang (J. Optim. Theory Appl., 2018)