@article{01803750,
title = {A functor-valued invariant of tangles.},
journal = {Geometry \& Topology},
volume = {6},
year = {2002},
pages = {665-741},
doi = {10.2140/agt.2002.2.665},
zbl = {1002.57006},
language = {en},
url = {http://dml.mathdoc.fr/item/01803750}
}
Khovanov, Mikhail. A functor-valued invariant of tangles.. Geometry & Topology, Tome 6 (2002) pp. 665-741. doi : 10.2140/agt.2002.2.665. http://gdmltest.u-ga.fr/item/01803750/