%0 Journal Article
%A Nirenberg, L.
%T Variational methods in nonlinear problems
%J Séminaire Goulaouic-Schwartz
%Z talk:20
%D 1980-1981
%P 1-5
%I Ecole Polytechnique, Centre de Mathématiques
%U https://www.numdam.org/item/SEDP_1980-1981____A22_0/
%G en
%F SEDP_1980-1981____A22_0