@article{DE_1976_12_6_a22,
     author = {N. P. Erugin and Yu. S. Bogdanov and N. A. Izobov},
     title = {Boris {Pavlovi\v{c}} {Demidovi\v{c}} (on the occasion of his seventieth birthday)},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1134--1138},
     year = {1976},
     volume = {12},
     number = {6},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1976_12_6_a22/}
}