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@article{FAA_1967_1_2_a6, author = {A. M. Stepin}, title = {Spectrum and approximation of metric automorphisms by periodic transformations}, journal = {Funkcionalʹnyj analiz i ego prilo\v{z}eni\^a}, pages = {77--80}, publisher = {mathdoc}, volume = {1}, number = {2}, year = {1967}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/FAA_1967_1_2_a6/} }
A. M. Stepin. Spectrum and approximation of metric automorphisms by periodic transformations. Funkcionalʹnyj analiz i ego priloženiâ, Tome 1 (1967) no. 2, pp. 77-80. http://geodesic.mathdoc.fr/item/FAA_1967_1_2_a6/