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@article{TM_1971_107_a0, author = {Yu. I. Khmelevskii}, title = {Equations in a free semigroup}, journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova}, pages = {3--288}, publisher = {mathdoc}, volume = {107}, year = {1971}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/TM_1971_107_a0/} }
Yu. I. Khmelevskii. Equations in a free semigroup. Trudy Matematicheskogo Instituta imeni V.A. Steklova, Equations in a free semigroup, Tome 107 (1971), pp. 3-288. http://geodesic.mathdoc.fr/item/TM_1971_107_a0/