@article{DAN_1974_214_4_a8,
     author = {A. A. Markov},
     title = {On the language {{\CYRYA}}$_3$},
     journal = {Doklady Akademii Nauk},
     pages = {765--768},
     year = {1974},
     volume = {214},
     number = {4},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1974_214_4_a8/}
}