%0 Journal Article
%A E. P. Dolzhenko
%A E. A. Sevast'yanov
%T Sign-sensitive approximations. Problems of uniqueness and
%J Doklady Akademii Nauk
%D 1993
%P 5-7
%V 333
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1993_333_1_a0/
%G ru
%F DAN_1993_333_1_a0