  
  
  [1XReferences[101X
  
  [[20X1[120X]  [16XAlbert,  M.  H.  and  Atkinson,  M. D.[116X, [17XSimple permutations and pattern
  restricted  permutations[117X,  [18XDiscrete  Mathematics[118X, [19X300[119X, 1--3 (2005), 1 -- 15,
  (()).
  
  [[20X2[120X]  [16XAlbert,  M. H., Atkinson, M. D. and Ru\v{s}kuc, N.[116X, [17XRegular closed sets
  of permutations[117X, [18XTheoretical Computer Science[118X, [19X306[119X (2003), 85 - 100.
  
  [[20X3[120X]  [16XAtkinson,  M. D., Livesey, M. J. and Tulley, D.[116X, [17XPermutations generated
  by  token passing in graphs[117X, [18XTheoretical Computer Science[118X, [19X178[119X (n.d.), 103 -
  118.
  
  [[20X4[120X] [16XBrignall, R.[116X, [17XA Survey of Simple Permutations[117X, [18XArXiv e-prints[118X (2008).
  
  [[20X5[120X]  [16XClaesson,  A.,  Jel{\'{i}}nek,  V.  and  Steingr{\'{i}}msson, E.[116X, [17XUpper
  bounds  for the Stanley-Wilf limit of 1324 and other layered patterns[117X, [18XArXiv
  e-prints[118X (2011).
  
  [[20X6[120X]  [16XHoffmann,  R.  and  Linton,  S.[116X,  [17XRegular Languages of Plus- and Minus-
  (In)Decomposable Permutations[117X, [18XPure Mathematics and Applications (to appear)[118X
  (2013).
  
  [[20X7[120X]  [16XPierrot,  A.  and Rossin, D.[116X, [17XSimple permutations poset[117X, [18XArXiv e-prints[118X
  (2012), 1--15.
  
  [[20X8[120X]  [16XUno,  T.  and  Yagiura,  M.[116X,  [17XFast  Algorithms  to Enumerate All Common
  Intervals of Two Permutations[117X, [18XAlgorithmica[118X, [19X26[119X (2000), 2000.
  
  
  
  [32X
