@article{KYB_1969_5_1_a2,
     author = {Schein, Boris},
     title = {On some problems in the theory of partial automata},
     journal = {Kybernetika},
     pages = {44--49},
     year = {1969},
     volume = {5},
     number = {1},
     mrnumber = {0250889},
     zbl = {0169.01405},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/KYB_1969_5_1_a2/}
}