Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{MZ_1976__151_172446, author = {Frank Levin and Benjamin Baumslag}, title = {A {Free} {Product} with a {Non-Power} {Amalgamated} which is not {Residually} {Free.}}, journal = {Mathematische Zeitschrift}, pages = {235--238}, publisher = {mathdoc}, volume = {151}, year = {1976}, zbl = {0325.20030}, url = {http://geodesic.mathdoc.fr/item/MZ_1976__151_172446/} }
Frank Levin; Benjamin Baumslag. A Free Product with a Non-Power Amalgamated which is not Residually Free.. Mathematische Zeitschrift, Tome 151 (1976), pp. 235-238. http://geodesic.mathdoc.fr/item/MZ_1976__151_172446/