@misc{TRSPY_1990_183_a0,
     title = {Preface},
     journal = {Informatics and Automation},
     pages = {4--6},
     publisher = {mathdoc},
     volume = {183},
     year = {1990},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TRSPY_1990_183_a0/}
}