@article{GDZPPN002105306,
title = {A surjectivity theorem for rigid highest weight modules.},
journal = {Inventiones mathematicae},
volume = {93},
year = {1988},
pages = {567-596},
zbl = {0657.17004},
url = {http://dml.mathdoc.fr/item/GDZPPN002105306}
}
Joseph, Anthony. A surjectivity theorem for rigid highest weight modules.. Inventiones mathematicae, Tome 93 (1988) pp. 567-596. http://gdmltest.u-ga.fr/item/GDZPPN002105306/