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@article{DAN_1966_168_3_a2, author = {N. V. Beljakin}, title = {Turing machines working in the plane}, journal = {Doklady Akademii Nauk}, pages = {502--503}, publisher = {mathdoc}, volume = {168}, number = {3}, year = {1966}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1966_168_3_a2/} }
N. V. Beljakin. Turing machines working in the plane. Doklady Akademii Nauk, Tome 168 (1966) no. 3, pp. 502-503. http://geodesic.mathdoc.fr/item/DAN_1966_168_3_a2/