MUSTONEN, V.; SIMADER, C. G. On the existence and uniqueness of solutions for strongly nonlinear elliptic variational problems. Annales Fennici Mathematici, [S. l.], v. 6, n. 2, p. 233–253, 1981. DOI: 10.5186/aasfm.1981.0612. Disponível em: https://afm.journal.fi/article/view/134415. Acesso em: 25 nov. 2024.