@article{ELMA_1949__4_140503,
     author = {H. Jecklin},
     title = {Hyperbolische {Interpolation.}},
     journal = {Elemente der Mathematik},
     pages = {30--34},
     publisher = {mathdoc},
     volume = {4},
     year = {1949},
     zbl = {0033.06903},
     url = {http://geodesic.mathdoc.fr/item/ELMA_1949__4_140503/}
}