@article{GDZPPN002054337,
title = {Der Cohomologie-Ring einer beliebigen Gruppe.},
journal = {Commentarii mathematici Helvetici},
volume = {18},
year = {1945},
pages = {232-282},
zbl = {0061.40705},
url = {http://dml.mathdoc.fr/item/GDZPPN002054337}
}
Eckmann, Beno. Der Cohomologie-Ring einer beliebigen Gruppe.. Commentarii mathematici Helvetici, Tome 18 (1945) pp. 232-282. http://gdmltest.u-ga.fr/item/GDZPPN002054337/