@article{JDM_1913__22_145383,
     author = {Konrad Zindler},
     title = {\"Uber geschlossene {Raumkruven.}},
     journal = {Jahresbericht der Deutschen Mathematiker-Vereinigung},
     pages = {329--330},
     publisher = {mathdoc},
     volume = {22},
     year = {1913},
     zbl = {44.0563.01},
     url = {http://geodesic.mathdoc.fr/item/JDM_1913__22_145383/}
}