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Carrés de Steenrod, II
@article{SHC_1949-1950__2__A14_0, author = {Cartan, H.}, title = {Carr\'es de {Steenrod,} {I}}, journal = {S\'eminaire Henri Cartan}, note = {talk:14}, pages = {1--10}, publisher = {Secr\'etariat math\'ematique}, volume = {2}, year = {1949-1950}, language = {fr}, url = {http://archive.numdam.org/item/SHC_1949-1950__2__A14_0/} }
Cartan, H. Carrés de Steenrod, I. Séminaire Henri Cartan, Espaces fibrés et homotopie, Tome 2 (1949-1950), Exposé no. 14, 10 p. http://archive.numdam.org/item/SHC_1949-1950__2__A14_0/