@article{AIHP_1938__8_1_1_0,
     author = {Ullmo, Jean},
     title = {Recherches sur l'\'equilibre \'economique},
     journal = {Annales de l'institut Henri Poincar\'e},
     pages = {1--62},
     publisher = {INSTITUT HENRI POINCAR\'E ET GAUTHIER-VILLARS},
     volume = {8},
     number = {1},
     year = {1938},
     zbl = {0020.04804},
     language = {fr},
     url = {http://www.numdam.org/item/AIHP_1938__8_1_1_0/}
}