%0 Journal Article
%A E. S. Zaputryaeva
%T Isometric deformations of planar quadrilaterals with constant index
%J Sbornik. Mathematics
%D 2014
%P 663-683
%V 205
%N 5
%I mathdoc
%U http://geodesic.mathdoc.fr/item/SM_2014_205_5_a3/
%G en
%F SM_2014_205_5_a3