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@article{AL_1968_7_2_a1, author = {V. M. Kopytov and I. I. Mamaev}, title = {Absolute convexity of certain subgroups of an orderable group}, journal = {Algebra i logika}, pages = {20--26}, publisher = {mathdoc}, volume = {7}, number = {2}, year = {1968}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/AL_1968_7_2_a1/} }
V. M. Kopytov; I. I. Mamaev. Absolute convexity of certain subgroups of an orderable group. Algebra i logika, Tome 7 (1968) no. 2, pp. 20-26. http://geodesic.mathdoc.fr/item/AL_1968_7_2_a1/