@article{JDM_1918__26_145506,
     author = {W. Gaedecke},
     title = {Beitr\"age zur {Theorie} der {Kissoide.}},
     journal = {Jahresbericht der Deutschen Mathematiker-Vereinigung},
     pages = {50--55},
     publisher = {mathdoc},
     volume = {26},
     year = {1918},
     zbl = {46.1040.03},
     url = {http://geodesic.mathdoc.fr/item/JDM_1918__26_145506/}
}