@article{GDZPPN002080974, title = {W-Kurven in der ebenen Lie-Geometrie. I.}, journal = {Elemente der Mathematik}, volume = {39}, year = {1984}, pages = {28-33}, language = {de}, url = {http://dml.mathdoc.fr/item/GDZPPN002080974} }
Pinkall, U. W-Kurven in der ebenen Lie-Geometrie. I.. Elemente der Mathematik, Tome 39 (1984) pp. 28-33. http://gdmltest.u-ga.fr/item/GDZPPN002080974/