@article{GDZPPN00236199X,
title = {Root multiplicities and ideals in quasisimple Lie algebras.},
journal = {Mathematica Scandinavica},
volume = {73},
year = {1993},
pages = {15-20},
zbl = {0792.17020},
url = {http://dml.mathdoc.fr/item/GDZPPN00236199X}
}
Aslaksen, Helmer; Wahl, Terje. Root multiplicities and ideals in quasisimple Lie algebras.. Mathematica Scandinavica, Tome 73 (1993) pp. 15-20. http://gdmltest.u-ga.fr/item/GDZPPN00236199X/