@article{1102806145,
author = {Schultz, Phillip},
title = {The typeset and cotypeset of a rank $2$ abelian group.},
journal = {Pacific J. Math.},
volume = {79},
number = {2},
year = {1978},
pages = { 503-517},
language = {en},
url = {http://dml.mathdoc.fr/item/1102806145}
}
Schultz, Phillip. The typeset and cotypeset of a rank $2$ abelian group.. Pacific J. Math., Tome 79 (1978) no. 2, pp. 503-517. http://gdmltest.u-ga.fr/item/1102806145/