@misc{TRSPY_1968_104_a6,
     title = {Errata},
     journal = {Informatics and Automation},
     pages = {217},
     publisher = {mathdoc},
     volume = {104},
     year = {1968},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TRSPY_1968_104_a6/}
}