On the existence of solutions to quasivariational inclusion problems. - Nguyen Xuan Hai; Phan Quoc Khanh; Nguyen Hong Quan 005 (J. Glob. Optim., 2009)

Continuous Selections, Collectively Fixed Points and Weak Knaster-Kuratowski-Mazurkiewicz Mappings in Optimization. - Phan Quoc Khanh; Vo Si Trong Long; Nguyen Hong Quan 005 (J. Optim. Theory Appl., 2011)

Generic Stability and Essential Components of Generalized KKM Points and Applications. - Phan Quoc Khanh; Nguyen Hong Quan 005 (J. Optim. Theory Appl., 2011)

Versions of the Weierstrass Theorem for Bifunctions and Solution Existence in Optimization. - Phan Quoc Khanh; Nguyen Hong Quan 005 (SIAM J. Optim., 2019)

On the existence and stability of solutions to stochastic equilibrium problems. - Lam Quoc Anh; Nguyen Xuan Hai; Kien Trung Nguyen; Nguyen Hong Quan 005; Dang Thi My Van (RAIRO Oper. Res., 2021)

Some saddle-point theorems for vector-valued functions. - Nguyen Xuan Hai; Nguyen Hong Quan 005; Vo Viet Tri (J. Glob. Optim., 2023)