@misc{TRSPY_1990_184_a0,
     title = {Prefase},
     journal = {Informatics and Automation},
     pages = {4},
     publisher = {mathdoc},
     volume = {184},
     year = {1990},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TRSPY_1990_184_a0/}
}