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@article{CM_1971__23_3_329_0, author = {James, I. M.}, title = {Products between homotopy groups}, journal = {Compositio Mathematica}, pages = {329--345}, publisher = {Wolters-Noordhoff Publishing}, volume = {23}, number = {3}, year = {1971}, mrnumber = {303532}, zbl = {0218.55020}, language = {en}, url = {http://geodesic.mathdoc.fr/item/CM_1971__23_3_329_0/} }
James, I. M. Products between homotopy groups. Compositio Mathematica, Tome 23 (1971) no. 3, pp. 329-345. http://geodesic.mathdoc.fr/item/CM_1971__23_3_329_0/