%0 Journal Article
%A M. V. Zenkina
%T An invariant of knots in thickened surfaces
%J Contemporary Mathematics. Fundamental Directions
%D 2013
%P 21-32
%V 51
%I mathdoc
%U http://geodesic.mathdoc.fr/item/CMFD_2013_51_a1/
%G ru
%F CMFD_2013_51_a1