@article{JAC_2013__38_4_a8,
     author = {Wyser, Benjamin J.},
     title = {Schubert calculus of richardson varieties stable under spherical {Levi} subgroups},
     journal = {Journal of Algebraic Combinatorics},
     pages = {829--850},
     publisher = {mathdoc},
     volume = {38},
     number = {4},
     year = {2013},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/JAC_2013__38_4_a8/}
}