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@article{AL_1965_4_1_a3, author = {R. V. Freivalds}, title = {The complexity of the recognition of symmetry on {Turing} machines}, journal = {Algebra i logika}, pages = {47--58}, publisher = {mathdoc}, volume = {4}, number = {1}, year = {1965}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/AL_1965_4_1_a3/} }
R. V. Freivalds. The complexity of the recognition of symmetry on Turing machines. Algebra i logika, Tome 4 (1965) no. 1, pp. 47-58. http://geodesic.mathdoc.fr/item/AL_1965_4_1_a3/