@article{wong:2007:afd,
    author = {Wong, R. and Zhang, H. Y.},
     title = {Asymptotic solutions of a fourth order differential equation},
   journal = {Stud. Appl. Math.},
  fjournal = {Studies in Applied Mathematics},
    volume = {118},
      year = {2007},
    number = {2},
     pages = {133–152},
      issn = {0022-2526},
   mrclass = {34A25 (34E10)},
  mrnumber = {MR2288540},
       doi = {10.1111/j.1467-9590.2007.00369.x}}