  
  
  [1XReferences[101X
  
  [[20XBir75[120X]  [16XBirman,  J.  S.[116X, [17XBraids, links, and mapping class groups[117X, Princeton
  University  Press, Princeton, N. J. (1975), 1 pages, (Based on lecture notes
  by James Cannon).
  
  [[20XBre00[120X]  [16XBreuer,  T.[116X,  [17XCharacters and automorphism groups of compact Riemann
  surfaces[117X, Cambridge University Press, [19X280[119X (2000).
  
  [[20XMSSV02[120X]  [16XMagaard,  K., Shaska, T., Shpectorov, S. and V\"{o}lklein, H.[116X, [17XThe
  locus  of  curves  with  prescribed  automorphism  group.[117X, [18XCommunications in
  arithmetic fundamental groups (Kyoto, 1999/2000)[118X (2002).
  
  [[20XV\t96[120X]  [16XV{\"o}lklein,  H.[116X,  [17XGroups  as  Galois groups[117X, Cambridge University
  Press,  Cambridge  Studies  in  Advanced  Mathematics, [19X53[119X, Cambridge (1996),
  xviii+248 pages, (An introduction).
  
  
  
  [32X
