0 and e E X such that lIell > rand inf
An Introduction to Minimax Theorems and Their Applications to Differential Equations
Minimax Theorems and Qualitative Properties of the Solutions of Hemivariational Inequalities
Critical Point Theory and Its Applications
Topological and Variational Methods with Applications to Nonlinear Boundary Value Problems
Minimax Systems and Critical Point Theory
Methods of Nonlinear Analysis Applications to Differential Equations
Topological Methods for Variational Problems with Symmetries
Perturbation Methods and Semilinear Elliptic Problems on R^n
Asymptotics of Nonlinearities and Operator Equations
Minimax and Applications