@article{JMPA_1928_9_7__93_0,
     author = {Bouligand, Georges},
     title = {Sur la notion g\'en\'erale de flux de {Green} et son application \`a l'\'etude du principe de {Picard}},
     journal = {Journal de Math\'ematiques Pures et Appliqu\'ees},
     pages = {93--111},
     publisher = {Gauthier-Villars},
     volume = {9e s{\'e}rie, 7},
     year = {1928},
     language = {fr},
     url = {http://www.numdam.org/item/JMPA_1928_9_7__93_0/}
}