@article{1256049907,
author = {Ullom, Stephen V.},
title = {Nontrivial lower bounds for class groups of integral group rings},
journal = {Illinois J. Math.},
volume = {20},
number = {4},
year = {1976},
pages = { 361-371},
language = {en},
url = {http://dml.mathdoc.fr/item/1256049907}
}
Ullom, Stephen V. Nontrivial lower bounds for class groups of integral group rings. Illinois J. Math., Tome 20 (1976) no. 4, pp. 361-371. http://gdmltest.u-ga.fr/item/1256049907/