@article{JRAM_1965__220_150706,
     author = {Karl-Bernhard Gundlach},
     title = {Die {Bestimmung} der {Funktionen} zu einigen {Hilbertschen} {Modulgruppen.}},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {109--153},
     publisher = {mathdoc},
     volume = {220},
     year = {1965},
     zbl = {0166.34002},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1965__220_150706/}
}