%0 Journal Article
%A N. N. Vorobjov (Jr.)
%A D. Yu. Grigor'ev
%T Determination of the number of connected components of a
%J Doklady Akademii Nauk
%D 1990
%P 1040-1043
%V 314
%N 5
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1990_314_5_a2/
%G ru
%F DAN_1990_314_5_a2