@article{JMPA_1892_4_8__187_0, author = {Appell, Paul}, title = {Sur l'\'equation $\frac{\partial^2z}{\partial x^2}-\frac{\partial z}{\partial y}=0$ et la {Th\'eorie} de la chaleur}, journal = {Journal de Math\'ematiques Pures et Appliqu\'ees}, pages = {187--216}, publisher = {Gauthier-Villars}, volume = {4e s{\'e}rie, 8}, year = {1892}, language = {fr}, url = {http://www.numdam.org/item/JMPA_1892_4_8__187_0/} }