@article{MAN_1958__135_160630,
     author = {H. MAASS},
     title = {Zur {Theorie} der {Kugelfunktionen} einer {Matrixvariablen.}},
     journal = {Mathematische Annalen},
     pages = {391--416},
     publisher = {mathdoc},
     volume = {135},
     year = {1958},
     language = {de},
     url = {http://geodesic.mathdoc.fr/item/MAN_1958__135_160630/}
}