The Implicit General Order Complementarity Problem, models and iterative methods. - George Isac; D. Goeleven (Ann. Oper. Res., 1993)

Exceptional Families, Topological Degree and Complementarity Problems. - George Isac; V. Bulavski; Vyacheslav Kalashnikov (J. Glob. Optim., 1997)

Exceptional Families of Elements for Continuous Functions: Some Applications to Complementarity Theory. - George Isac; A. Carbone (J. Glob. Optim., 1999)

The Generic Stability and Existence of Essentially Connected Components of Solutions for Nonlinear Complementarity Problems. - George Isac; George Xian-Zhi Yuan (J. Glob. Optim., 2000)

Properties of a Multivalued Mapping Associated with Some Nonmonotone Complementarity Problems. - Yun-Bin Zhao; George Isac (SIAM J. Control. Optim., 2000)

Solvability of Implicit Complementarity Problems. - Vyacheslav Kalashnikov; George Isac (Ann. Oper. Res., 2002)

Some general solvability theorems. - George Isac; Cezar Avramescu (Appl. Math. Lett., 2004)

Complementarity Problems and Variational Inequalities. A Unified Approach of Solvability by an Implicit Leray-Schauder Type Alternative. - George Isac (J. Glob. Optim., 2005)

Duality in Multivalued Complementarity Theory by Using Inversions and Scalar Derivatives. - George Isac; Sándor Zoltán Németh (J. Glob. Optim., 2005)

Full Nuclear Cones and a Relation Between Strong Optimization and Pareto Efficiency. - George Isac; Vasile Postolica (J. Glob. Optim., 2005)

Nonlinear analysis and complementarity theory. - George Isac (J. Glob. Optim., 2008)

The non-existence of a regular exceptional family of elements. A necessary and sufficient condition. Applications to complementarity theory. - George Isac; Sándor Zoltán Németh (J. Glob. Optim., 2008)

Regular exceptional family of elements with respect to isotone projection cones in Hilbert spaces and complementarity problems. - George Isac; Sándor Zoltán Németh (Optim. Lett., 2008)

Dubovitskii–Milyutin Approach in Set-Valued Optimization. - George Isac; A. A. Khan (SIAM J. Control. Optim., 2008)

An existence theorem for nonlinear complementarity problems. - George Isac; I. M. Popovici (Appl. Math. Lett., 2009)

Equivalence Between Nonlinear Complementarity Problem and Fixed Point Problem. - George Isac (Encyclopedia of Optimization, 2009)

Order Complementarity. - George Isac (Encyclopedia of Optimization, 2009)

Topological Methods in Complementarity Theory. - George Isac (Encyclopedia of Optimization, 2009)

Quasi-bounded mappings and complementarity problems depending of parameters. - George Isac (J. Glob. Optim., 2010)