%0 Journal Article %A King, Ronald C. %A Welsh, Trevor A. %A Van Willigenburg, Stephanie J. %T Schur positivity of skew Schur function differences and applications to ribbons and Schubert classes %J Journal of Algebraic Combinatorics %D 2008 %P 139-167 %V 28 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/JAC_2008__28_1_a4/ %G en %F JAC_2008__28_1_a4