@article{GDZPPN002072882,
title = {Die Steinersche Hypozykloide. II.},
journal = {Elemente der Mathematik},
volume = {5},
year = {1950},
pages = {73-78},
zbl = {0037.21902},
url = {http://dml.mathdoc.fr/item/GDZPPN002072882}
}
Stoll, A. Die Steinersche Hypozykloide. II.. Elemente der Mathematik, Tome 5 (1950) pp. 73-78. http://gdmltest.u-ga.fr/item/GDZPPN002072882/