@article{1029000893, author = {Williams, F. D.}, title = {Quasi-commutativity of $H$-spaces.}, journal = {Michigan Math. J.}, volume = {19}, number = {1}, year = {1972}, pages = { 209-213}, language = {en}, url = {http://dml.mathdoc.fr/item/1029000893} }
Williams, F. D. Quasi-commutativity of $H$-spaces.. Michigan Math. J., Tome 19 (1972) no. 1, pp. 209-213. http://gdmltest.u-ga.fr/item/1029000893/