@article{1102971645, author = {Smith, Douglas B.}, title = {On the number of finitely generated $O$-groups.}, journal = {Pacific J. Math.}, volume = {35}, number = {3}, year = {1970}, pages = { 499-502}, language = {en}, url = {http://dml.mathdoc.fr/item/1102971645} }
Smith, Douglas B. On the number of finitely generated $O$-groups.. Pacific J. Math., Tome 35 (1970) no. 3, pp. 499-502. http://gdmltest.u-ga.fr/item/1102971645/