@article{IM_1981__65_142841,
     author = {R. Felix},
     title = {Das {Syntheseproblem} f\"ur invariante {Distributionen.}},
     journal = {Inventiones mathematicae},
     pages = {85--96},
     publisher = {mathdoc},
     volume = {65},
     year = {1981},
     zbl = {0475.22009},
     url = {http://geodesic.mathdoc.fr/item/IM_1981__65_142841/}
}