@article{GDZPPN00210072X,
title = {The characteristic cycles of holonomic systems on a flag manifold.},
journal = {Inventiones mathematicae},
volume = {75},
year = {1984},
pages = {185-198},
zbl = {0611.22008},
url = {http://dml.mathdoc.fr/item/GDZPPN00210072X}
}
Kashiwara, M.; Tanisaki, T. The characteristic cycles of holonomic systems on a flag manifold.. Inventiones mathematicae, Tome 75 (1984) pp. 185-198. http://gdmltest.u-ga.fr/item/GDZPPN00210072X/