@article{DAN_1974_214_3_a7,
     author = {A. A. Markov},
     title = {On the language {\it {{\CYRYA}}}$_2$},
     journal = {Doklady Akademii Nauk},
     pages = {513--516},
     publisher = {mathdoc},
     volume = {214},
     number = {3},
     year = {1974},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1974_214_3_a7/}
}