@article{JRAM_1940__181_150070,
     author = {Theodor Jr. Kaluza},
     title = {Untersuchung fastperiodischer {Funktionen} mittels \"aquidistanter {Zahlenmengen.}},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {153--176},
     publisher = {mathdoc},
     volume = {181},
     year = {1940},
     zbl = {65.0269.01},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1940__181_150070/}
}