@article{DAN_1976_227_1_a7,
     author = {A. A. Letichevskii and L. B. Smikun},
     title = {On a class of groups with solvable problem of automata equivalence},
     journal = {Doklady Akademii Nauk},
     pages = {36--38},
     publisher = {mathdoc},
     volume = {227},
     number = {1},
     year = {1976},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1976_227_1_a7/}
}