@article{JMPA_1941_9_20__325_0,
     author = {Bouligand, Georges},
     title = {Sur les surfaces satisfaisant \`a la th\'eorie de {Gauss} et \`a la relation classique entre la courbure totale et la courbure g\'eod\'esique},
     journal = {Journal de Math\'ematiques Pures et Appliqu\'ees},
     pages = {325--337},
     publisher = {Gauthier-Villars},
     volume = {9e s{\'e}rie, 20},
     year = {1941},
     zbl = {0027.08804},
     language = {fr},
     url = {http://www.numdam.org/item/JMPA_1941_9_20__325_0/}
}