@article{ELMA_1994__49_1_141569,
     author = {Christian Blatter},
     title = {Von den {Keplerschen} {Gesetzen} zu einer minutengenauen {Sonnenuhr.}},
     journal = {Elemente der Mathematik},
     pages = {155--165},
     publisher = {mathdoc},
     volume = {49},
     number = {1},
     year = {1994},
     language = {de},
     url = {http://geodesic.mathdoc.fr/item/ELMA_1994__49_1_141569/}
}