@article{GDZPPN002403943,
title = {On Finitely Generated Subgroups of a Free Product.},
journal = {Mathematische Zeitschrift},
volume = {105},
year = {1968},
pages = {285-287},
zbl = {0182.03601},
url = {http://dml.mathdoc.fr/item/GDZPPN002403943}
}
Karrass, Abraham; Solitar, Donald. On Finitely Generated Subgroups of a Free Product.. Mathematische Zeitschrift, Tome 105 (1968) pp. 285-287. http://gdmltest.u-ga.fr/item/GDZPPN002403943/