BibTeX

@ARTICLE{iumj31051,
    author = "K. Chang and Song-Ying Li and S. Wu",
     title = "Multiple Periodic Solutions for an Asymptotically Linear Wave Equation",
   journal = "Indiana Univ. Math. J.",
  fjournal = "Indiana University Mathematics Journal",
    volume = 31,
      year = 1982,
     issue = 5,
     pages = "721--731",
      issn = "0022-2518",
     coden = "IUMJAB",
   mrclass = "",
}

amsrefs

\bib{iumj31051}{article}{
     author = {Chang, K.},
     author = {Li, Song-Ying},
     author = {Wu, S.},
      title = {Multiple Periodic Solutions for an Asymptotically Linear Wave Equation},
    journal = {Indiana Univ. Math. J.},
     volume = {31},
       year = {1982},
     number = {5},
      pages = {721 \ndash 731},
}