Landesman-Lazer condition for periodic problems with jumping nonlinearities Pavel Drábek (1987) Commentationes Mathematicae Universitatis Carolinae
Large time behaviour of the solutions to some nonlinear evolution equations Alain Haraux (1985) Commentationes Mathematicae Universitatis Carolinae
Liouville type results for periodic and almost periodic linear operators Luca Rossi (2009) Annales de l'I.H.P. Analyse non linéaire
Long-Range and Periodic Solutions of Parabolic Problems. Eckart Gekeler (1973) Mathematische Zeitschrift