%0 Journal Article
%A G. A. Karpunin
%T An analogue of Morse theory for planar linear networks and the~generalized Steiner problem
%J Sbornik. Mathematics
%D 2000
%P 209-233
%V 191
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/SM_2000_191_2_a2/
%G en
%F SM_2000_191_2_a2