Optimal Shape Design Problems for a Class of Systems Described by Hemivariational Inequalities. - Zdzislaw Denkowski; Stanislaw Migórski (J. Glob. Optim., 1998)

Existence of Solutions to Evolution Second Order Hemivariational Inequalities with Multivalued Damping. - Zdzislaw Denkowski; Stanislaw Migórski (System Modelling and Optimization, 2003)

Nontrivial Solutions for Resonant Hemivariational Inequalities. - Zdzislaw Denkowski; Leszek Gasinski; Nikolaos S. Papageorgiou (J. Glob. Optim., 2006)