@article{1183524398,
author = {Kristensen, Leif},
title = {On the cohomology of two-stage Postnikov systems},
journal = {Bull. Amer. Math. Soc.},
volume = {67},
number = {6},
year = {1961},
pages = { 597-602},
language = {en},
url = {http://dml.mathdoc.fr/item/1183524398}
}
Kristensen, Leif. On the cohomology of two-stage Postnikov systems. Bull. Amer. Math. Soc., Tome 67 (1961) no. 6, pp. 597-602. http://gdmltest.u-ga.fr/item/1183524398/