@article{AL_1966_5_5_a7,
     author = {R. V. Freivalds},
     title = {On the order of growth of exact time signalizers for {Turing}},
     journal = {Algebra i logika},
     pages = {85--94},
     publisher = {mathdoc},
     volume = {5},
     number = {5},
     year = {1966},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AL_1966_5_5_a7/}
}