@article{AFST_1979_5_1_2_89_0,
     author = {Attouch, H\'edy and Picard, Colette},
     title = {Probl\`emes variationnels et th\'eorie du potentiel non lin\'eaire},
     journal = {Annales de la Facult\'e des sciences de Toulouse : Math\'ematiques},
     pages = {89--136},
     publisher = {Universit\'e Paul Sabatier},
     address = {Toulouse},
     volume = {5e s{\'e}rie, 1},
     number = {2},
     year = {1979},
     mrnumber = {554374},
     zbl = {0418.49012},
     language = {fr},
     url = {http://www.numdam.org/item/AFST_1979_5_1_2_89_0/}
}