%0 Journal Article
%A A. V. Bitsadze
%A A. A. Dorodnitsyn
%A V. A. Il'in
%A A. A. Samarskii
%A A. N. Tikhonov
%T Nikola{\v\i} Pavlovich Erugin (on the occasion of his eightieth birthday)
%J Differencialʹnye uravneniâ
%D 1987
%P 739-744
%V 23
%N 5
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1987_23_5_a0/
%G ru
%F DE_1987_23_5_a0