@article{1256052517, author = {Zabrodsky, Alexander}, title = {Secondary operations in the cohomology of $H$-spaces}, journal = {Illinois J. Math.}, volume = {15}, number = {4}, year = {1971}, pages = { 648-655}, language = {en}, url = {http://dml.mathdoc.fr/item/1256052517} }
Zabrodsky, Alexander. Secondary operations in the cohomology of $H$-spaces. Illinois J. Math., Tome 15 (1971) no. 4, pp. 648-655. http://gdmltest.u-ga.fr/item/1256052517/