%0 Journal Article %A V. O. Manturov %T Invariant two-variable polynomials for virtual links %J Trudy Matematicheskogo Instituta imeni V.A. Steklova %D 2002 %P 997-998 %V 57 %N 5 %U http://geodesic.mathdoc.fr/item/RM_2002_57_5_a9/ %G en %F RM_2002_57_5_a9