@article{GDZPPN002100207, title = {The invariant holonomic system on a semisimple Lie algebra.}, journal = {Inventiones mathematicae}, volume = {75}, year = {1984}, pages = {327-358}, zbl = {0538.22013}, url = {http://dml.mathdoc.fr/item/GDZPPN002100207} }
Hotta, R.; Kashiwara, M. The invariant holonomic system on a semisimple Lie algebra.. Inventiones mathematicae, Tome 75 (1984) pp. 327-358. http://gdmltest.u-ga.fr/item/GDZPPN002100207/