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@article{AL_1969_8_6_a7, author = {D. I. Moldavanskii}, title = {Conjugacy of subgroups of a free group}, journal = {Algebra i logika}, pages = {691--694}, publisher = {mathdoc}, volume = {8}, number = {6}, year = {1969}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/AL_1969_8_6_a7/} }
D. I. Moldavanskii. Conjugacy of subgroups of a free group. Algebra i logika, Tome 8 (1969) no. 6, pp. 691-694. http://geodesic.mathdoc.fr/item/AL_1969_8_6_a7/