@article{CMH_1991__66_4_140231, author = {M. Farber}, title = {Hermitian forms on link modules.}, journal = {Commentarii mathematici Helvetici}, pages = {189--236}, publisher = {mathdoc}, volume = {66}, number = {4}, year = {1991}, zbl = {0733.57013}, url = {http://geodesic.mathdoc.fr/item/CMH_1991__66_4_140231/} }