@article{DAN_1957_112_6_a6,
     author = {B. A. Trakhtenbrot},
     title = {On operators realizable in logical nets},
     journal = {Doklady Akademii Nauk},
     pages = {1005--1007},
     publisher = {mathdoc},
     volume = {112},
     number = {6},
     year = {1957},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1957_112_6_a6/}
}