@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/