New Sequential Lagrange Multiplier Conditions Characterizing Optimality without Constraint Qualification for Convex Programs. - Vaithilingam Jeyakumar; Gue Myung Lee; N. Dinh (SIAM J. Optim., 2003)

Characterizations of solution sets of convex vector minimization problems. - Vaithilingam Jeyakumar; Gue Myung Lee; N. Dinh (Eur. J. Oper. Res., 2006)

Liberating the Subgradient Optimality Conditions from Constraint Qualifications. - Vaithilingam Jeyakumar; Zhi-You Wu; Gue Myung Lee; N. Dinh (J. Glob. Optim., 2006)