@article{IVM_1975_9_a11,
     author = {D. E. Chernyi},
     title = {Experiments with automata relative to regular prefix-closed events},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {76--83},
     year = {1975},
     number = {9},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1975_9_a11/}
}