BibTeX

@ARTICLE{iumj22018,
    author = "J. Macki and Paul Waltman",
     title = "A Nonlinear Sturm-Liouville Problem",
   journal = "Indiana Univ. Math. J.",
  fjournal = "Indiana University Mathematics Journal",
    volume = 22,
      year = 1973,
     issue = 3,
     pages = "217--225",
      issn = "0022-2518",
     coden = "IUMJAB",
   mrclass = "",
}

amsrefs

\bib{iumj22018}{article}{
     author = {Macki, J.},
     author = {Waltman, Paul},
      title = {A Nonlinear Sturm-Liouville Problem},
    journal = {Indiana Univ. Math. J.},
     volume = {22},
       year = {1973},
     number = {3},
      pages = {217 \ndash 225},
}