@article{GT_2005_9_1_a7,
     author = {Ng, Lenhard},
     title = {Knot and braid invariants from contact homology {I}},
     journal = {Geometry & topology},
     pages = {247--297},
     publisher = {mathdoc},
     volume = {9},
     number = {1},
     year = {2005},
     doi = {10.2140/gt.2005.9.247},
     url = {http://geodesic.mathdoc.fr/articles/10.2140/gt.2005.9.247/}
}