@article{GDZPPN002260255, title = {\"Uber elliptisch-konvexe Ovale}, journal = {Mathematische Annalen}, volume = {61}, year = {1905}, pages = {256-262}, zbl = {36.0622.03}, url = {http://dml.mathdoc.fr/item/GDZPPN002260255} }
Böhmer, P. Über elliptisch-konvexe Ovale. Mathematische Annalen, Tome 61 (1905) pp. 256-262. http://gdmltest.u-ga.fr/item/GDZPPN002260255/