@article{IM_1993__113_2_144119,
     author = {Bram Broer},
     title = {Line bundles on the cotangent bundle fo the flag variety.},
     journal = {Inventiones mathematicae},
     pages = {1--20},
     publisher = {mathdoc},
     volume = {113},
     number = {2},
     year = {1993},
     zbl = {0807.14043},
     url = {http://geodesic.mathdoc.fr/item/IM_1993__113_2_144119/}
}