@article{ELMA_1953__8_140591,
     author = {H. Jecklin},
     title = {Trigonometrische {Mittelwerte.}},
     journal = {Elemente der Mathematik},
     pages = {54--60},
     year = {1953},
     volume = {8},
     language = {de},
     url = {http://geodesic.mathdoc.fr/item/ELMA_1953__8_140591/}
}