Coercivity conditions and variational inequalities. - Aris Daniilidis; Nicolas Hadjisavvas (Math. Program., 1999)

An Appropriate Subdifferential for Quasiconvex Functions. - Aris Daniilidis; Nicolas Hadjisavvas; Juan Enrique Martínez-Legaz (SIAM J. Optim., 2002)

Adjusted Sublevel Sets, Normal Operator, and Quasi-convex Programming. - Didier Aussel; Nicolas Hadjisavvas (SIAM J. Optim., 2005)

Translations of quasimonotone maps and monotonicity. - Nicolas Hadjisavvas (Appl. Math. Lett., 2006)

An Optimal Alternative Theorem and Applications to Mathematical Programming. - Fabián Flores Bazán; Nicolas Hadjisavvas; Cristian Vera (J. Glob. Optim., 2007)

Pseudomonotone *{_{ ast}} maps and the cutting plane property. - Nicolas Hadjisavvas; Siegfried Schaible (J. Glob. Optim., 2009)

Preface. - Nicolas Hadjisavvas; Michel Théra; Jafar Zafarani (J. Glob. Optim., 2009)

Single-Directional Property of Multivalued Maps and Variational Systems. - Didier Aussel; Yboon García; Nicolas Hadjisavvas (SIAM J. Optim., 2009)

Pseudomonotone Maps: Properties and Applications. - Nicolas Hadjisavvas (Encyclopedia of Optimization, 2009)

Carathéodory, Constantine. - Nicolas Hadjisavvas; Panos M. Pardalos (Encyclopedia of Optimization, 2009)

Generalized Monotone Multivalued Maps. - Nicolas Hadjisavvas; Siegfried Schaible (Encyclopedia of Optimization, 2009)

Generalized Monotone Single Valued Maps. - Nicolas Hadjisavvas; Siegfried Schaible (Encyclopedia of Optimization, 2009)

Generalized Monotonicity: Applications to Variational Inequalities and Equilibrium Problems. - Nicolas Hadjisavvas; Siegfried Schaible (Encyclopedia of Optimization, 2009)

Strong convergence theorem by a hybrid extragradient-like approximation method for variational inequalities and fixed point problems. - Lu-Chuan Ceng; Nicolas Hadjisavvas; Ngai-Ching Wong (J. Glob. Optim., 2010)

Preface. - Nicolas Hadjisavvas; Siegfried Schaible; Jen-Chih Yao (J. Glob. Optim., 2010)

Local boundedness of monotone bifunctions. - Mohammad Hossein Alizadeh; Nicolas Hadjisavvas (J. Glob. Optim., 2012)

Preface. - Nicolas Hadjisavvas (J. Glob. Optim., 2012)

Pseudomonotone Operators: A Survey of the Theory and Its Applications. - Nicolas Hadjisavvas; Siegfried Schaible; Ngai-Ching Wong (J. Optim. Theory Appl., 2012)

On cyclic and n-cyclic monotonicity of bifunctions. - Mohammad Hossein Alizadeh; Monica Bianchi; Nicolas Hadjisavvas; Rita Pini (J. Glob. Optim., 2014)

Preface. - Nicolas Hadjisavvas; Alfredo N. Iusem; Boris S. Mordukhovich (J. Glob. Optim., 2016)

First- and Second-Order Asymptotic Analysis with Applications in Quasiconvex Optimization. - Fabián Flores Bazán; Nicolas Hadjisavvas; Felipe Lara 001; Iván Montenegro (J. Optim. Theory Appl., 2016)

A Characterization by Optimization of the Monge Point of a Tetrahedron. - Nicolas Hadjisavvas; Jean-Baptiste Hiriart-Urruty; Pierre-Jean Laurent (J. Optim. Theory Appl., 2016)

Transformation of Quasiconvex Functions to Eliminate Local Minima. - Suliman Al-Homidan; Nicolas Hadjisavvas; Loai Shaalan (J. Optim. Theory Appl., 2018)

Representative functions of maximally monotone operators and bifunctions. - Monica Bianchi; Nicolas Hadjisavvas; Rita Pini (Math. Program., 2018)

A Quasiconvex Asymptotic Function with Applications in Optimization. - Nicolas Hadjisavvas; Felipe Lara 001; Juan Enrique Martínez-Legaz (J. Optim. Theory Appl., 2019)

A general asymptotic function with applications in nonconvex optimization. - Nicolas Hadjisavvas; Felipe Lara 001; Dinh The Luc (J. Glob. Optim., 2020)

Characterizing quasiconvexity of the pointwise infimum of a family of arbitrary translations of quasiconvex functions, with applications to sums and quasiconvex optimization. - Fabián Flores Bazán; Yboon García; Nicolas Hadjisavvas (Math. Program., 2021)

PRINIA: Privacy-Preserving Facial Recognition Framework for Extended Reality Environments. - George E. Raptis; Christina Katsini; Nicolas Hadjisavvas; Efstathios Stavrakis (ICCA, 2024)