@article{MM2_1975__16_154331,
     author = {Wolfgang Sander},
     title = {Verallgemeinerungen eines {Satzes} von {S.} {Piccard.}},
     journal = {Manuscripta mathematica},
     pages = {11--26},
     publisher = {mathdoc},
     volume = {16},
     year = {1975},
     language = {de},
     url = {http://geodesic.mathdoc.fr/item/MM2_1975__16_154331/}
}