@article{ASENS_1899_3_16__427_0,
     author = {Zaremba, S.},
     title = {Sur l{\textquoteright}\'equation aux d\'eriv\'ees partielles $\varDelta u+\xi u+f=0$ et sur les fonctions harmoniques},
     journal = {Annales scientifiques de l'\'Ecole Normale Sup\'erieure},
     pages = {427--464},
     publisher = {Elsevier},
     volume = {3e s{\'e}rie, 16},
     year = {1899},
     doi = {10.24033/asens.471},
     language = {fr},
     url = {http://www.numdam.org/articles/10.24033/asens.471/}
}