@article{ASENS_1972_4_5_2_277_0,
     author = {Bourguignon, J.-P. and Deschamps, A. and Sentenac, P.},
     title = {Conjecture de {H.} {Hopf} sur les produits de vari\'et\'es},
     journal = {Annales scientifiques de l'\'Ecole Normale Sup\'erieure},
     pages = {277--302},
     publisher = {Elsevier},
     volume = {4e s{\'e}rie, 5},
     number = {2},
     year = {1972},
     doi = {10.24033/asens.1229},
     mrnumber = {49 #1420},
     zbl = {0241.53025},
     language = {fr},
     url = {http://www.numdam.org/articles/10.24033/asens.1229/}
}