1. Theorie der Zöpfe;Artin;Abh. Math. Sem. Univ. Hamburg,1925
2. Theory of braids;Artin;Ann. of Math.,1947
3. Braids, Links and Mapping Class Groups;Birman,1975
4. Boundary string links;de Campos;J. Knot Theory Ramifications,1999
5. J.E.P.P. de Campos, The stabilizer of 1 in Habegger–Lin's action for string links, unpublished results