@article{GDZPPN002412837,
title = {The Residual Finiteness of Certain Amalgameted Free Products.},
journal = {Mathematische Zeitschrift},
volume = {135},
year = {1973},
pages = {179-182},
zbl = {0251.20034},
url = {http://dml.mathdoc.fr/item/GDZPPN002412837}
}
Tretkoff, Martin. The Residual Finiteness of Certain Amalgameted Free Products.. Mathematische Zeitschrift, Tome 135 (1973) pp. 179-182. http://gdmltest.u-ga.fr/item/GDZPPN002412837/