%0 Journal Article
%A N. P. Erugin
%A Yu. S. Bogdanov
%A N. A. Izobov
%T Boris Pavlovi{\v{c}} Demidovi{\v{c}} (on the occasion of his seventieth birthday)
%J Differencialʹnye uravneniâ
%D 1976
%P 1134-1138
%V 12
%N 6
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1976_12_6_a22/
%G ru
%F DE_1976_12_6_a22