@article{DE_1979_15_8_a0,
     author = {V. S. Vladimirov and N. P. Erugin and Yu. A. Mitropol'skii and O. S. Parasyuk},
     title = {Nikolaǐ {Nikolaevi\v{c}} {Bogoljubov} (on the occasion of his 70th birthday)},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1347--1359},
     year = {1979},
     volume = {15},
     number = {8},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1979_15_8_a0/}
}