1. On braids of algebraic functions and cohomologies of swallowtails;Arnold;Uspekhi Mat. Nauk,1968
2. Lower bounds for algebraic computation trees;Ben-or,1983
3. Braids, Links, and Mapping Class Groups;Birman,1974
4. Sur les groupes de tresses (d'apres V. I. Arnold);Brieskorn,1973
5. The homology of iterated loop spaces;Cohen,1976