@article{BSMF_1958__86__271_0, author = {Eckmann, Beno}, title = {Groupes d'homotopie et dualit\'e}, journal = {Bulletin de la Soci\'et\'e Math\'ematique de France}, pages = {271--281}, publisher = {Soci\'et\'e math\'ematique de France}, volume = {86}, year = {1958}, doi = {10.24033/bsmf.1506}, zbl = {0092.40202}, mrnumber = {21 #5189}, language = {fr}, url = {http://archive.numdam.org/articles/10.24033/bsmf.1506/} }