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@article{IM_1983__71_142995, author = {George Lusztig and David A., Jr. Vogan}, title = {Singularities of {Closures} of {K-orbits} on {Flag} {Manifolds.}}, journal = {Inventiones mathematicae}, pages = {365--380}, publisher = {mathdoc}, volume = {71}, year = {1983}, zbl = {0544.14035}, url = {http://geodesic.mathdoc.fr/item/IM_1983__71_142995/} }
George Lusztig; David A., Jr. Vogan. Singularities of Closures of K-orbits on Flag Manifolds.. Inventiones mathematicae, Tome 71 (1983), pp. 365-380. http://geodesic.mathdoc.fr/item/IM_1983__71_142995/