@article{BSMF_1970__98__337_0, author = {Gr\"abe, P.J. and Viljoen, G.}, title = {Characterizations of classes of left Ext-reproduced groups}, journal = {Bulletin de la Soci\'et\'e Math\'ematique de France}, volume = {98}, year = {1970}, pages = {337-358}, doi = {10.24033/bsmf.1707}, zbl = {0188.06601}, language = {en}, url = {http://dml.mathdoc.fr/item/BSMF_1970__98__337_0} }
Gräbe, P.J.; Viljoen, G. Characterizations of classes of left Ext-reproduced groups. Bulletin de la Société Mathématique de France, Tome 98 (1970) pp. 337-358. doi : 10.24033/bsmf.1707. http://gdmltest.u-ga.fr/item/BSMF_1970__98__337_0/
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