%0 Journal Article
%A V. S. Vladimirov
%A N. P. Erugin
%A Yu. A. Mitropol'skii
%A O. S. Parasyuk
%T Nikola{\v\i} Nikolaevi{\v{c}} Bogoljubov (on the occasion of his 70th birthday)
%J Differencialʹnye uravneniâ
%D 1979
%P 1347-1359
%V 15
%N 8
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1979_15_8_a0/
%G ru
%F DE_1979_15_8_a0