@article {albert:polypaper:,
    AUTHOR = {Albert, M. H. and Atkinson, M. D. and Brignall, Robert},
     TITLE = {Permutation classes of polynomial growth},
   JOURNAL = {Ann. Comb.},
  FJOURNAL = {Annals of Combinatorics},
    VOLUME = {11},
      YEAR = {2007},
    NUMBER = {3-4},
     PAGES = {249--264},
      ISSN = {0218-0006},
   MRCLASS = {05A15 (05A05)},
  MRNUMBER = {MR2376105}
}