@article{MAN_1962__146_160926,
     author = {H. G\"UNZLER},
     title = {Eigenfunktion-Entwicklungen und allgemeine {Fastperiodizit\"at.}},
     journal = {Mathematische Annalen},
     pages = {146--179},
     publisher = {mathdoc},
     volume = {146},
     year = {1962},
     zbl = {0103.06303},
     url = {http://geodesic.mathdoc.fr/item/MAN_1962__146_160926/}
}