%0 Journal Article %A D. Yu. Eliseev %A M. V. Ignat'ev %T Kostant--Kumar polynomials and tangent cones to Schubert varieties for involutions in $A_n$, $F_4$ and $G_2$ %J Zapiski Nauchnykh Seminarov POMI %D 2013 %P 82-105 %V 414 %I mathdoc %U http://geodesic.mathdoc.fr/item/ZNSL_2013_414_a4/ %G ru %F ZNSL_2013_414_a4