@article{GDZPPN002302748,
title = {On the Conjugacy Problem for Certain Quotient Groups of Free Products.},
journal = {Mathematische Annalen},
volume = {189},
year = {1970},
pages = {123-129},
zbl = {0182.03504},
url = {http://dml.mathdoc.fr/item/GDZPPN002302748}
}
SCHUPP, P.E. On the Conjugacy Problem for Certain Quotient Groups of Free Products.. Mathematische Annalen, Tome 189 (1970) pp. 123-129. http://gdmltest.u-ga.fr/item/GDZPPN002302748/