@article{berry:1993:uho,
    author = {Berry, M. V. and Howls, C. J.},
     title = {Unfolding the high orders of asymptotic expansions with
              coalescing saddles: Singularity theory, crossover and duality},
   journal = {Proc. Roy. Soc. London Ser. A},
  fjournal = {Proceedings of the Royal Society. London. Series A.
              Mathematical, Physical and Engineering Sciences},
    volume = {443},
      year = {1993},
     pages = {107–126},
      issn = {0962-8444},
     coden = {PRLAAZ},
   mrclass = {41A60},
  mrnumber = {MR1245682 (94j:41024)},
mrreviewer = {Roderick Wong},
     links = {\URL[FullText]{http://links.jstor.org/sici?sici=0962-8444%2819931008%29443%3A1917%3C107%3AUTHOOA%3E2.0.CO%3B2-2}},
     zblno = {0803.58008}}