BibTeX

@ARTICLE{iumj28046,
    author = "Richard Leggett and Lynn Williams",
     title = "Multiple Positive Fixed Points of Nonlinear Operators on Ordered Banach Spaces",
   journal = "Indiana Univ. Math. J.",
  fjournal = "Indiana University Mathematics Journal",
    volume = 28,
      year = 1979,
     issue = 4,
     pages = "673--688",
      issn = "0022-2518",
     coden = "IUMJAB",
   mrclass = "",
}

amsrefs

\bib{iumj28046}{article}{
     author = {Leggett, Richard},
     author = {Williams, Lynn},
      title = {Multiple Positive Fixed Points of Nonlinear Operators on Ordered Banach Spaces},
    journal = {Indiana Univ. Math. J.},
     volume = {28},
       year = {1979},
     number = {4},
      pages = {673 \ndash 688},
}