@article{GDZPPN002102889,
title = {A polynomial invariant for unoriented knots and links.},
journal = {Inventiones mathematicae},
volume = {83},
year = {1986},
pages = {563-574},
zbl = {0595.57009},
url = {http://dml.mathdoc.fr/item/GDZPPN002102889}
}
Lickorish, W.B.R.; Brandt, R.D. A polynomial invariant for unoriented knots and links.. Inventiones mathematicae, Tome 83 (1986) pp. 563-574. http://gdmltest.u-ga.fr/item/GDZPPN002102889/