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@article{IM2_1972_6_1_a3, author = {Yu. I. Khmelevskii}, title = {Systems of equations in a~free {group.~II}}, journal = {Izvestiya. Mathematics }, pages = {109--180}, publisher = {mathdoc}, volume = {6}, number = {1}, year = {1972}, language = {en}, url = {http://geodesic.mathdoc.fr/item/IM2_1972_6_1_a3/} }
Yu. I. Khmelevskii. Systems of equations in a~free group.~II. Izvestiya. Mathematics , Tome 6 (1972) no. 1, pp. 109-180. http://geodesic.mathdoc.fr/item/IM2_1972_6_1_a3/