@article{IM_1986__84_143352, author = {W.B.R. Lickorish and R.D. Brandt}, title = {A polynomial invariant for unoriented knots and links.}, journal = {Inventiones mathematicae}, pages = {563--574}, publisher = {mathdoc}, volume = {84}, year = {1986}, zbl = {0595.57009}, url = {http://geodesic.mathdoc.fr/item/IM_1986__84_143352/} }