- Variational and Hemivariational Inequalities Theory, Methods and Applications: Volume I: Unilateral Analysis and Unilateral Mechanics
- Variational and Non-Variational Methods in Nonlinear Analysis and Boundary Value Problems
- Topological and Variational Methods with Applications to Nonlinear Boundary Value Problems
- Nonsmooth Variational Problems and Their Inequalities: Comparison Principles and Applications
- Minimax Theorems and Qualitative Properties of the Solutions of Hemivariational Inequalities