@article{BSMA_1882_2_6_1_314_0,
     author = {Appell, P.},
     title = {Sur une \'equation lin\'eaire aux d\'eriv\'ees partielles},
     journal = {Bulletin des Sciences Math\'ematiques et Astronomiques},
     pages = {314--318},
     publisher = {Gauthier-Villars},
     volume = {2e s{\'e}rie, 6},
     number = {1},
     year = {1882},
     language = {fr},
     url = {http://www.numdam.org/item/BSMA_1882_2_6_1_314_0/}
}