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@article{IVM_1963_3_a22, author = {V. K. Smyshlyaev}, title = {The general case of contraction of continued fractions}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {158--161}, publisher = {mathdoc}, number = {3}, year = {1963}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1963_3_a22/} }
V. K. Smyshlyaev. The general case of contraction of continued fractions. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 3 (1963), pp. 158-161. http://geodesic.mathdoc.fr/item/IVM_1963_3_a22/