1 - Nonlinear operators and the calculus of variations : summer school held in Bruxelles 8-19 September 1975Gossez, Jean-Pierre (1943-....) (Ed.) / Mawhin, Jean (1942-....) (Ed.) / Waelbroeck, Lucien (1929-....) (Ed.) / Dozo Lami, Enrique J. (Ed.)Cote : [42.4 GOS 76]