@article{SHC_1958-1959__11_1_A6_0, author = {Cartan, Henri}, title = {Invariant de {Hopf} (fin)}, journal = {S\'eminaire Henri Cartan}, note = {talk:6}, pages = {1--12}, publisher = {Secr\'etariat math\'ematique}, volume = {11}, number = {1}, year = {1958-1959}, language = {fr}, url = {http://www.numdam.org/item/SHC_1958-1959__11_1_A6_0/} }
Cartan, Henri. Invariant de Hopf (fin). Séminaire Henri Cartan, Invariant de Hopf et opérations cohomologiques secondaires, Tome 11 (1958-1959) no. 1, Exposé no. 6, 12 p. http://www.numdam.org/item/SHC_1958-1959__11_1_A6_0/
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