@article{01139218,
title = {A natural framing of knots.},
journal = {Geometry \& Topology},
volume = {2},
year = {1998},
pages = {31-64},
doi = {10.2140/gt.1998.2.31},
zbl = {0891.57010},
language = {en},
url = {http://dml.mathdoc.fr/item/01139218}
}
Greene, Michael; Wiest, Bert. A natural framing of knots.. Geometry & Topology, Tome 2 (1998) pp. 31-64. doi : 10.2140/gt.1998.2.31. http://gdmltest.u-ga.fr/item/01139218/