Critical points and nonlinear variational problems
Antonio Ambrosetti (1992)
Mémoires de la Société Mathématique de France
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Antonio Ambrosetti (1992)
Mémoires de la Société Mathématique de France
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Antonio Ambrosetti, Marino Badiale (1998)
Annales de l'I.H.P. Analyse non linéaire
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Andrzej Szulkin (1986)
Annales de l'I.H.P. Analyse non linéaire
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Antonio Marino, Claudio Saccon (1997)
Annali della Scuola Normale Superiore di Pisa - Classe di Scienze
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Castro, Alfonso (2000)
Electronic Journal of Differential Equations (EJDE) [electronic only]
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L. Sánchez (1994)
Revista Matemática de la Universidad Complutense de Madrid
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We obtain non-constant periodic solutions for a class of second-order autonomous dynamic systems whose potential is subquadratic at infinity. We give a theorem on conjugate points for convex potentials.