1. Theorie der Zopfe;Artin;Hamburg Abh.,1947
2. On Siegel's modular group;Birman;Math. Ann.,1971
3. Braid, Links and Mapping Class Groups;Birman,1974
4. Automorphic sets and braids and singularities;Brieskorn,1988
5. Combinatorial Group Theory, a Topological Approach;Cohen,1989