List of citations in Numdam for : Ljusternik-Schnirelman theory with local Palais-Smale condition and singular dynamical systems

Annales de l'I.H.P. Analyse non linéaire, Volume 8 (1991) no. 5, p. 459-476

Ambrosetti, Antonio

Mémoires de la Société Mathématique de France, no. 49 (1992) , 144 p.