@article{INTV_1972_10_a3,
     author = {A. V. Gladkii and A. Ya. Dikovsky},
     title = {The theory of formal grammars},
     journal = {Itogi nauki i tehniki. Seri\^a, Teori\^a vero\^atnostej. Matemati\v{c}eska\^a statistika. Teoreti\v{c}eska\^a kibernetika},
     pages = {107--142},
     publisher = {mathdoc},
     volume = {10},
     year = {1972},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/INTV_1972_10_a3/}
}