%0 Journal Article
%A A. V. Bitsadze
%A N. P. Erugin
%A V. A. Il'in
%A A. A. Samarskii
%T Andre{\v\i} Nikolaevich Tikhonov (on the occasion of his eightieth birthday)
%J Differencialʹnye uravneniâ
%D 1986
%P 2027-2031
%V 22
%N 12
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1986_22_12_a0/
%G ru
%F DE_1986_22_12_a0