@article{DE_1977_13_12_a19,
     author = {N. P. Erugin and Yu. S. Bogdanov and N. A. Izobov and I. P. Makarov and K. S. Sibirskii},
     title = {Boris {Pavlovi\v{c}} {Demidovi\v{c}}},
     journal = {Differencialʹnye uravneni\^a},
     pages = {2280--2283},
     year = {1977},
     volume = {13},
     number = {12},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1977_13_12_a19/}
}