@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/