Valeurs propres de problèmes aux limites elliptiques irréguliers
Valeurs propres d'une classe d'équations différentielles singulières sur une demi-droite
Variational and topological methods for Dirichlet problems with -Laplacian.
Variational inequalities for energy functionals with nonstandard growth conditions.
Variational methods and linearization tools towards the spectral analysis of the -Laplacian, especially for the Fredholm alternative.
Viscosity solutions of nonlinear systems of degenerated elliptic equations of second order.