%0 Journal Article
%A G. N. Tyurina
%T On the tautness of rationally contractible curves on a surface
%J Izvestiya. Mathematics 
%D 1968
%P 907-934
%V 2
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/IM2_1968_2_4_a12/
%G en
%F IM2_1968_2_4_a12