Théorèmes de Hurewicz et Whitehead
Séminaire Henri Cartan, Volume 11 (1958-1959) no. 1, Talk no. 4, 13 p.
@article{SHC_1958-1959__11_1_A4_0,
     author = {Demazure, Michel},
     title = {Th\'eor\`emes de Hurewicz et Whitehead},
     journal = {S\'eminaire Henri Cartan},
     publisher = {Secr\'etariat math\'ematique},
     volume = {11},
     number = {1},
     year = {1958-1959},
     note = {talk:4},
     language = {fr},
     url = {http://www.numdam.org/item/SHC_1958-1959__11_1_A4_0}
}
Demazure, Michel. Théorèmes de Hurewicz et Whitehead. Séminaire Henri Cartan, Volume 11 (1958-1959) no. 1, Talk no. 4, 13 p. http://www.numdam.org/item/SHC_1958-1959__11_1_A4_0/