@article{GDZPPN002232324,
title = {The lattices and M\"obius functions of stable closed subrootsystems and Hyperplane complements for classical Weyl Groups.},
journal = {Manuscripta mathematica},
volume = {70},
year = {1991},
pages = {375-404},
zbl = {0790.52006},
url = {http://dml.mathdoc.fr/item/GDZPPN002232324}
}
Fleischmann, Peter; Janiszczak, Ingo. The lattices and Möbius functions of stable closed subrootsystems and Hyperplane complements for classical Weyl Groups.. Manuscripta mathematica, Tome 70 (1991) pp. 375-404. http://gdmltest.u-ga.fr/item/GDZPPN002232324/