@article{SCC_1956-1958__2__A10_0,
     author = {Chevalley, C.},
     title = {Existence d'isog\'enies, {I}},
     journal = {S\'eminaire Claude Chevalley},
     note = {talk:23},
     pages = {1--12},
     publisher = {Secr\'etariat math\'ematique},
     volume = {2},
     year = {1956-1958},
     language = {fr},
     url = {http://www.numdam.org/item/SCC_1956-1958__2__A10_0/}
}