@article{JRAM_1990__412_153281,
     author = {Anton Deitmar},
     title = {Invariant operators on higher {K-types.}},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {97--107},
     publisher = {mathdoc},
     volume = {412},
     year = {1990},
     zbl = {0712.43006},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1990__412_153281/}
}