@article{SHC_1955-1956__8__A15_1,
     author = {Cartier, P. and Chevalley, C.},
     title = {Extension du corps de base dans les sch\'emas},
     journal = {S\'eminaire Henri Cartan},
     note = {talk:15},
     pages = {1--12},
     publisher = {Secr\'etariat math\'ematique},
     volume = {8},
     year = {1955-1956},
     language = {fr},
     url = {http://archive.numdam.org/item/SHC_1955-1956__8__A15_1/}
}