Groupes d'homotopie des bouquets de sphères
Séminaire Henri Cartan, Volume 7 (1954-1955) no. 2, Talk no. 20, 7 p.
@article{SHC_1954-1955__7_2_A10_0,
     author = {Serre, Jean-Pierre},
     title = {Groupes d'homotopie des bouquets de sph\`eres},
     journal = {S\'eminaire Henri Cartan},
     publisher = {Secr\'etariat math\'ematique},
     volume = {7},
     number = {2},
     year = {1954-1955},
     note = {talk:20},
     language = {fr},
     url = {http://www.numdam.org/item/SHC_1954-1955__7_2_A10_0}
}
Serre, J. P. Groupes d'homotopie des bouquets de sphères. Séminaire Henri Cartan, Volume 7 (1954-1955) no. 2, Talk no. 20, 7 p. http://www.numdam.org/item/SHC_1954-1955__7_2_A10_0/

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