Variational Methods: Applications to Nonlinear Partial Differential Equations and Hamiltonian Systems (Ergebnisse der Mathematik und ihrer ... Series of Modern Surveys in Mathematics, 34)
Variational Methods in Mathematical Physics: A Unified Approach (Theoretical and Mathematical Physics)
Variational Methods Applications to Nonlinear Partial Differential Equations and Hamiltonian Systems
An Invitation to Variational Methods in Differential Equations
Topological and Variational Methods with Applications to Nonlinear Boundary Value Problems
Variational and Free Boundary Problems (The IMA Volumes in Mathematics and its Applications)
Variational, Topological, and Partial Order Methods with Their Applications
Direct Methods in the Calculus of Variations
Partial Differential Equations and the Calculus of Variations: Essays in Honor of Ennio De Giorgi (Progress in Nonlinear Differential Equations and Their Applications)