@article{1183532228,
author = {Hill, Paul},
title = {On the freeness of abelian groups: A generalization of Pontryagin's theorem},
journal = {Bull. Amer. Math. Soc.},
volume = {76},
number = {4},
year = {1970},
pages = { 1118-1120},
language = {en},
url = {http://dml.mathdoc.fr/item/1183532228}
}
Hill, Paul. On the freeness of abelian groups: A generalization of Pontryagin's theorem. Bull. Amer. Math. Soc., Tome 76 (1970) no. 4, pp. 1118-1120. http://gdmltest.u-ga.fr/item/1183532228/