@article{GDZPPN002104210, title = {Whittaker vectors and associated varieties.}, journal = {Inventiones mathematicae}, volume = {88}, year = {1987}, pages = {219-224}, zbl = {0633.17006}, url = {http://dml.mathdoc.fr/item/GDZPPN002104210} }
Matumoto, H. Whittaker vectors and associated varieties.. Inventiones mathematicae, Tome 88 (1987) pp. 219-224. http://gdmltest.u-ga.fr/item/GDZPPN002104210/