%0 Journal Article
%A A. V. Bitsadze
%A V. A. Il'in
%A A. A. Samarskii
%A A. G. Sveshnikov
%T Andre{\v\i} Nikolaevi{\v{c}} Tihonov (on the occasion of his seventieth birthday)
%J Differencialʹnye uravneniâ
%D 1976
%P 1731-1735
%V 12
%N 10
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1976_12_10_a0/
%G ru
%F DE_1976_12_10_a0