@article{MS2_1993__73_2_167253,
     author = {Helmer Aslaksen and Terje Wahl},
     title = {Root multiplicities and ideals in quasisimple {Lie} algebras.},
     journal = {Mathematica Scandinavica},
     pages = {15--20},
     publisher = {mathdoc},
     volume = {73},
     number = {2},
     year = {1993},
     zbl = {0792.17020},
     url = {http://geodesic.mathdoc.fr/item/MS2_1993__73_2_167253/}
}