@article{DAN_1985_284_1_a3,
     author = {R. I. Grigorchuk},
     title = {A relationship between algorithmic problems and entropy},
     journal = {Doklady Akademii Nauk},
     pages = {24--29},
     publisher = {mathdoc},
     volume = {284},
     number = {1},
     year = {1985},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1985_284_1_a3/}
}