@article{SHC_1954-1955__7_2_A10_0,
     author = {Serre, J. P.},
     title = {Groupes d'homotopie des bouquets de sph\`eres},
     journal = {S\'eminaire Henri Cartan},
     note = {talk:20},
     pages = {1--7},
     publisher = {Secr\'etariat math\'ematique},
     volume = {7},
     number = {2},
     year = {1954-1955},
     language = {fr},
     url = {http://www.numdam.org/item/SHC_1954-1955__7_2_A10_0/}
}