@article{1255631588,
author = {Snapper, Ernst},
title = {Monotone behavior of cohomology groups under proper mappings},
journal = {Illinois J. Math.},
volume = {5},
number = {1},
year = {1961},
pages = { 666-680},
language = {en},
url = {http://dml.mathdoc.fr/item/1255631588}
}
Snapper, Ernst. Monotone behavior of cohomology groups under proper mappings. Illinois J. Math., Tome 5 (1961) no. 1, pp. 666-680. http://gdmltest.u-ga.fr/item/1255631588/