@article{1255454114,
author = {Kan, Daniel M.},
title = {Minimal free c.s.s. groups},
journal = {Illinois J. Math.},
volume = {2},
number = {1},
year = {1958},
pages = { 537-547},
language = {en},
url = {http://dml.mathdoc.fr/item/1255454114}
}
Kan, Daniel M. Minimal free c.s.s. groups. Illinois J. Math., Tome 2 (1958) no. 1, pp. 537-547. http://gdmltest.u-ga.fr/item/1255454114/