(phi(1), phi(2))-variational principle

Maaden, A; Stouti, A

Maaden, A (reprint author), Univ Sultan Moulay Slimane, Fac Sci & Tech, Lab Math & Applicat, BP 523, Beni Mellal 23000, Morocco.

INTERNATIONAL JOURNAL OF NONLINEAR ANALYSIS AND APPLICATIONS, 2017; 8 (2): 251