BibTeX

@ARTICLE{iumj20001,
    author = "Theodore Laetsch",
     title = "The Number of Solutions of a Nonlinear Two Point Boundary Value Problem",
   journal = "Indiana Univ. Math. J.",
  fjournal = "Indiana University Mathematics Journal",
    volume = 20,
      year = 1971,
     issue = 1,
     pages = "1--13",
      issn = "0022-2518",
     coden = "IUMJAB",
   mrclass = "",
}

amsrefs

\bib{iumj20001}{article}{
     author = {Laetsch, Theodore},
      title = {The Number of Solutions of a Nonlinear Two Point Boundary Value Problem},
    journal = {Indiana Univ. Math. J.},
     volume = {20},
       year = {1971},
     number = {1},
      pages = {1 \ndash 13},
}