%0 Journal Article %A Grigori Olshanski %T Projections of Orbital Measures, Gelfand-Tsetlin Polytopes, and Splines %J Journal of Lie Theory %D 2013 %P 1011-1022 %V 23 %N 4 %U http://geodesic.mathdoc.fr/item/JOLT_2013_23_4_a6/ %F JOLT_2013_23_4_a6