@article{DAN_1962_147_6_a9,
     author = {V. I. Levenshtein},
     title = {The inversion of finite automata},
     journal = {Doklady Akademii Nauk},
     pages = {1300--1303},
     publisher = {mathdoc},
     volume = {147},
     number = {6},
     year = {1962},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1962_147_6_a9/}
}