@article{IM_1982__67_142915,
     author = {G.J. Heckman},
     title = {Projections of {Orbits} and {Asymptotic} {Behavior} of {Multiplicities} for {Compact} {Connected} {Lie} {Groups.}},
     journal = {Inventiones mathematicae},
     pages = {333--356},
     publisher = {mathdoc},
     volume = {67},
     year = {1982},
     zbl = {0497.22006},
     url = {http://geodesic.mathdoc.fr/item/IM_1982__67_142915/}
}