@article{DAN_1974_214_2_a10, author = {A. A. Markov}, title = {On the language {\it {{\CYRYA}}}$_1$}, journal = {Doklady Akademii Nauk}, pages = {279--282}, publisher = {mathdoc}, volume = {214}, number = {2}, year = {1974}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1974_214_2_a10/} }