@article{JMPA_1936_9_15__97_0,
     author = {Delsarte, J.},
     title = {Sur un proc\'ed\'e formel de d\'eveloppement des fonctions en s\'eries et sur quelques applications},
     journal = {Journal de Math\'ematiques Pures et Appliqu\'ees},
     pages = {97--102},
     publisher = {Gauthier-Villars},
     volume = {9e s{\'e}rie, 15},
     year = {1936},
     zbl = {0013.39904},
     language = {fr},
     url = {http://archive.numdam.org/item/JMPA_1936_9_15__97_0/}
}