Arias, M.; Campos, J.; Cuesta, M.; Gossez, J.-P. Asymmetric elliptic problems with indefinite weights. (English) Zbl 1016.35054 Ann. Inst. Henri Poincaré, Anal. Non Linéaire 19, No. 5, 581-616 (2002). Reviewer: Messoud Efendiev (Berlin) MSC: 35P20 35J60 35J25 PDFBibTeX XMLCite \textit{M. Arias} et al., Ann. Inst. Henri Poincaré, Anal. Non Linéaire 19, No. 5, 581--616 (2002; Zbl 1016.35054) Full Text: DOI Numdam EuDML
Gossez, J.-P.; Omari, P. Non-ordered lower and upper solutions in semilinear elliptic problems. (English) Zbl 0814.35019 Commun. Partial Differ. Equations 19, No. 7-8, 1163-1184 (1994). Reviewer: G.H.Sweers (Delft) MSC: 35J15 35J60 PDFBibTeX XMLCite \textit{J. P. Gossez} and \textit{P. Omari}, Commun. Partial Differ. Equations 19, No. 7--8, 1163--1184 (1994; Zbl 0814.35019) Full Text: DOI
El Hachimi, A.; Gossez, J.-P. A note on a nonresonance condition for a quasilinear elliptic problem. (English) Zbl 0816.35031 Nonlinear Anal., Theory Methods Appl. 22, No. 2, 229-236 (1994). Reviewer: J.Appell (Würzburg) MSC: 35J65 35A05 35P30 PDFBibTeX XMLCite \textit{A. El Hachimi} and \textit{J. P. Gossez}, Nonlinear Anal., Theory Methods Appl. 22, No. 2, 229--236 (1994; Zbl 0816.35031) Full Text: DOI
Gossez, Jean-Pierre; Omari, Pierpaolo Periodic solutions of a second order ordinary differential equation: A necessary and sufficient condition for nonresonance. (English) Zbl 0743.34045 J. Differ. Equations 94, No. 1, 67-82 (1991). Reviewer: E.Brommundt (Braunschweig) MSC: 34C25 PDFBibTeX XMLCite \textit{J.-P. Gossez} and \textit{P. Omari}, J. Differ. Equations 94, No. 1, 67--82 (1991; Zbl 0743.34045) Full Text: DOI
Gossez, Jean-Pierre; Omari, Pierpaolo Nonresonance with respect to the Fučik spectrum for periodic solutions of second order ordinary differential equations. (English) Zbl 0709.34037 Nonlinear Anal., Theory Methods Appl. 14, No. 12, 1079-1104 (1990). Reviewer: J.-P.Gossez MSC: 34C25 PDFBibTeX XMLCite \textit{J.-P. Gossez} and \textit{P. Omari}, Nonlinear Anal., Theory Methods Appl. 14, No. 12, 1079--1104 (1990; Zbl 0709.34037) Full Text: DOI