@article{02100240, title = {Trefoil knots with tritangent planes.}, journal = {Beitr\"age zur Algebra und Geometrie}, volume = {45}, year = {2004}, pages = {527-530}, zbl = {1067.53001}, language = {en}, url = {http://dml.mathdoc.fr/item/02100240} }
Heil, Erhard. Trefoil knots with tritangent planes.. Beiträge zur Algebra und Geometrie, Tome 45 (2004) pp. 527-530. http://gdmltest.u-ga.fr/item/02100240/