1. Braids, Links, and Mapping Class Groups;Birman,1977
2. Curves on 2-manifolds and isotopies;Epstein;Acta Math.,1966
3. Piecewise Linear Topology;Hudson,1969
4. On Knots;Kauffman,1987
5. New invariants in the theory of knots;Kauffman;Amer. Math. Monthly,1988