%0 Journal Article
%A V. K. Ivanov
%T On linear problems which are not well-posed
%J Doklady Akademii Nauk
%D 1962
%P 270-272
%V 145
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1962_145_2_a10/
%G ru
%F DAN_1962_145_2_a10