@article{DAN_1964_155_1_a7,
     author = {M. I. Kratko},
     title = {Algorithmic unsolvability of the problem of completeness recognition for finite automata},
     journal = {Doklady Akademii Nauk},
     pages = {35--37},
     publisher = {mathdoc},
     volume = {155},
     number = {1},
     year = {1964},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1964_155_1_a7/}
}