@article{1183532097,
author = {Harper, John R.},
title = {On the cohomology of stable two stage Postnikov systems},
journal = {Bull. Amer. Math. Soc.},
volume = {76},
number = {4},
year = {1970},
pages = { 807-809},
language = {en},
url = {http://dml.mathdoc.fr/item/1183532097}
}
Harper, John R. On the cohomology of stable two stage Postnikov systems. Bull. Amer. Math. Soc., Tome 76 (1970) no. 4, pp. 807-809. http://gdmltest.u-ga.fr/item/1183532097/