Strongly quasivariational inequalities for fuzzy mappings. - Gue Myung Lee; Do Sang Kim; Byung-Soo Lee (Fuzzy Sets Syst., 1996)

Multiobjective symmetric duality with cone constraints. - Do Sang Kim; Ye Boon Yun; Won Jung Lee (Eur. J. Oper. Res., 1998)

A common fixed point theorem for a pair of fuzzy mappings. - Byung-Soo Lee; Gue Myung Lee; Sung Jin Cho; Do Sang Kim (Fuzzy Sets Syst., 1998)

Fubini theorem for generalized fuzzy number-valued integrals. - Sung Jin Cho; Byung-Soo Lee; Gue Myung Lee; Do Sang Kim; Yeoul-Ouk Song (Fuzzy Sets Syst., 1999)

Minimax and symmetric duality for nonlinear multiobjective mixed integer programming. - Do Sang Kim; Young Ran Song (Eur. J. Oper. Res., 2001)

Fuzzy integrals for set-valued mappings. - Sung Jin Cho; Byung-Soo Lee; Gue Myung Lee; Do Sang Kim (Fuzzy Sets Syst., 2001)

Infine Functions, Nonsmooth Alternative Theorems and Vector Optimization Problems. - Pham Huu Sach; Gue Myung Lee; Do Sang Kim (J. Glob. Optim., 2003)

Characterizations of Hartley Proper Efficiency in Nonconvex Vector Optimization. - Gue Myung Lee; Do Sang Kim; Pham Huu Sach (J. Glob. Optim., 2005)

Generalized Convexity and Nonsmooth Problems of Vector Optimization. - Pham Huu Sach; Do Sang Kim; Gue Myung Lee (J. Glob. Optim., 2005)

Non-differentiable symmetric duality for multiobjective programming with cone constraints. - Moon Hee Kim; Do Sang Kim (Eur. J. Oper. Res., 2008)

Weak stability and strong duality of a class of nonconvex infinite programs via augmented Lagrangian. - T. Q. Son; Do Sang Kim; Nguyen Nang Tam (J. Glob. Optim., 2012)

Stability of Implicit Multifunctions in Banach Spaces. - N. Q. Huy; Do Sang Kim; K. V. Ninh (J. Optim. Theory Appl., 2012)

Solution existence and stability of quadratically constrained convex quadratic programs. - Do Sang Kim; Nguyen Nang Tam; Nguyen Dong Yen (Optim. Lett., 2012)

Lipschitz behavior of solutions to nonconvex semi-infinite vector optimization problems. - N. Q. Huy; Do Sang Kim (J. Glob. Optim., 2013)

ε-Mixed type duality for nonconvex multiobjective programs with an infinite number of constraints. - T. Q. Son; Do Sang Kim (J. Glob. Optim., 2013)

Optimality conditions and duality in nonsmooth multiobjective optimization problems. - Thai Doan Chuong; Do Sang Kim (Ann. Oper. Res., 2014)

A new approach to characterize the solution set of a pseudoconvex programming problem. - T. Q. Son; Do Sang Kim (J. Comput. Appl. Math., 2014)

Nonsmooth Semi-infinite Multiobjective Optimization Problems. - Thai Doan Chuong; Do Sang Kim (J. Optim. Theory Appl., 2014)

Combination of the Hybrid Steepest-Descent Method and the Viscosity Approximation. - Shahram Saeidi; Do Sang Kim (J. Optim. Theory Appl., 2014)

A class of nonsmooth fractional multiobjective optimization problems. - Thai Doan Chuong; Do Sang Kim (Ann. Oper. Res., 2016)

KKT optimality conditions in interval valued multiobjective programming with generalized differentiable functions. - Deepak Singh; Bilal Ahmad Dar; Do Sang Kim (Eur. J. Oper. Res., 2016)

Projection algorithms for solving nonmonotone equilibrium problems in Hilbert space. - Bui Van Dinh; Do Sang Kim (J. Comput. Appl. Math., 2016)

Hölder-Like Property and Metric Regularity of a Positive-Order for Implicit Multifunctions. - Thai Doan Chuong; Do Sang Kim (Math. Oper. Res., 2016)

Qualitative properties of strongly pseudomonotone variational inequalities. - Do Sang Kim; Phan Tu Vuong; Pham Duy Khanh (Optim. Lett., 2016)

Nondifferentiable minimax programming problems with applications. - Thai Doan Chuong; Do Sang Kim (Ann. Oper. Res., 2017)

Existence Theorems in Vector Optimization with Generalized Order. - Nguyen Quang Huy; Do Sang Kim; Nguyen Van Tuyen (J. Optim. Theory Appl., 2017)

Extragradient algorithms for equilibrium problems and symmetric generalized hybrid mappings. - Bui Van Dinh; Do Sang Kim (Optim. Lett., 2017)

Normal regularity for the feasible set of semi-infinite multiobjective optimization problems with applications. - Thai Doan Chuong; Do Sang Kim (Ann. Oper. Res., 2018)

Parallel extragradient algorithms for multiple set split equilibrium problems in Hilbert spaces. - Do Sang Kim; Bui Van Dinh (Numer. Algorithms, 2018)

A note on second-order Karush-Kuhn-Tucker necessary optimality conditions for smooth vector optimization problems. - Do Sang Kim; Nguyen Van Tuyen (RAIRO Oper. Res., 2018)

ϵ-Efficient solutions in semi-infinite multiobjective optimization. - Tatiana Shitkovskaya; Do Sang Kim (RAIRO Oper. Res., 2018)

On the existence of Pareto solutions for polynomial vector optimization problems. - Do Sang Kim; Tien Son Pham; Nguyen Van Tuyen (Math. Program., 2019)

Optimality conditions in convex optimization with locally Lipschitz constraints. - Zhe Hong; Kwan Deok Bae; Do Sang Kim (Optim. Lett., 2019)

On approximate solutions of nondifferentiable vector optimization problems with cone-convex objectives. - Zhe Hong; Guang-Ri Piao; Do Sang Kim (Optim. Lett., 2019)

On perturbed hybrid steepest descent method with minimization or superiorization for subdifferentiable functions. - Mohsen Hoseini; Shahram Saeidi; Do Sang Kim (Numer. Algorithms, 2020)

Existence of efficient and properly efficient solutions to problems of constrained vector optimization. - Do Sang Kim; Boris S. Mordukhovich; Tien Son Pham; Nguyen Van Tuyen (Math. Program., 2021)

Quasi ε-solutions in a semi-infinite programming problem with locally Lipschitz data. - Liguo Jiao; Do Sang Kim; Yuying Zhou (Optim. Lett., 2021)

Minimax programming as a tool for studying robust multi-objective optimization problems. - Zhe Hong; Kwan Deok Bae; Do Sang Kim (Ann. Oper. Res., 2022)

Two Optimal Value Functions in Parametric Conic Linear Programming. - Nguyen Ngoc Luan; Do Sang Kim; Nguyen Dong Yen (J. Optim. Theory Appl., 2022)

A dual scheme for solving linear countable semi-infinite fractional programming problems. - Ta Quang Son; Do Sang Kim (Optim. Lett., 2022)

On Types of Isolated KKT Points in Polynomial Optimization. - Feng Guo; Liguo Jiao; Do Sang Kim; Tien-Son Pham (J. Syst. Sci. Complex., 2023)

Optimality Conditions for Nondifferentiable Minimax Programs and Vector Optimization Problems. - Duong Thi Kim Huyen; Do Sang Kim; Nguyen Dong Yen (J. Optim. Theory Appl., 2024)

Optimality Conditions at Infinity for Nonsmooth Minimax Programming Problems with Some Applications. - Nguyen Van Tuyen; Kwan Deok Bae; Do Sang Kim (J. Optim. Theory Appl., 2025)

Directional Levitin-Polyak well-posedness for optimization problems and variational inequalities. - Do Sang Kim; Kwan Deok Bae; Vo Si Trong Long (Comput. Appl. Math., 2025)