@incollection{SB_1948-1951__1__153_0, author = {Ehresmann, Charles}, title = {Les connexions infinit\'esimales dans un espace fibr\'e diff\'erentiable}, booktitle = {S\'eminaire Bourbaki : ann\'ees 1948/49 - 1949/50 - 1950/51, expos\'es 1-49}, series = {S\'eminaire Bourbaki}, note = {talk:24}, pages = {153--168}, publisher = {Soci\'et\'e math\'ematique de France}, number = {1}, year = {1952}, mrnumber = {1605161}, language = {fr}, url = {http://archive.numdam.org/item/SB_1948-1951__1__153_0/} }