@article{RSMUP_1935__6__121_0,
     author = {Humbert, Pierre},
     title = {Quelques g\'en\'eralisations de l'\'equation de {Laplace}},
     journal = {Rendiconti del Seminario matematico della R. Universit\`a di Padova},
     pages = {121--131},
     publisher = {Seminario Matematico of the University of Padua},
     volume = {6},
     year = {1935},
     zbl = {0015.06604},
     language = {fr},
     url = {http://www.numdam.org/item/RSMUP_1935__6__121_0/}
}