@article{1256065776,
author = {Baumslag, Gilbert},
title = {On generalised free products of torsion-free nilpotent groups I},
journal = {Illinois J. Math.},
volume = {16},
number = {1},
year = {1972},
pages = { 526-528},
language = {en},
url = {http://dml.mathdoc.fr/item/1256065776}
}
Baumslag, Gilbert. On generalised free products of torsion-free nilpotent groups I. Illinois J. Math., Tome 16 (1972) no. 1, pp. 526-528. http://gdmltest.u-ga.fr/item/1256065776/