@article{DAN_1962_143_5_a15,
     author = {V. G. Lazarev and E. I. Piil'},
     title = {The decrease in the number of components in one class of finite automata},
     journal = {Doklady Akademii Nauk},
     pages = {1064--1066},
     publisher = {mathdoc},
     volume = {143},
     number = {5},
     year = {1962},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1962_143_5_a15/}
}