@misc{TRSPY_1967_89_a0,
     title = {Preface},
     journal = {Informatics and Automation},
     pages = {3--4},
     publisher = {mathdoc},
     volume = {89},
     year = {1967},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TRSPY_1967_89_a0/}
}