%0 Journal Article
%A D. A. Permyakov
%T Regular homotopy for immersions of graphs into surfaces
%J Sbornik. Mathematics
%D 2016
%P 854-872
%V 207
%N 6
%I mathdoc
%U http://geodesic.mathdoc.fr/item/SM_2016_207_6_a4/
%G en
%F SM_2016_207_6_a4