@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/}
}