@article{1250128319,
author = {Arnold, David M.},
title = {Endomorphism rings and subgroups of finite rank torsion-free Abelian groups},
journal = {Rocky Mountain J. Math.},
volume = {12},
number = {4},
year = {1982},
pages = { 241-256},
language = {en},
url = {http://dml.mathdoc.fr/item/1250128319}
}
Arnold, David M. Endomorphism rings and subgroups of finite rank torsion-free Abelian groups. Rocky Mountain J. Math., Tome 12 (1982) no. 4, pp. 241-256. http://gdmltest.u-ga.fr/item/1250128319/