%0 Journal Article
%A A. V. Kuz'minykh
%T The inverse image of any nonextremal value of almost every
%J Doklady Akademii Nauk
%D 1993
%P 14-16
%V 331
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1993_331_1_a3/
%G ru
%F DAN_1993_331_1_a3