BibTeX

@ARTICLE{iumj34029,
    author = "Robert Cantrell and Chris Cosner",
     title = "On the Positone Problem for Elliptic Systems",
   journal = "Indiana Univ. Math. J.",
  fjournal = "Indiana University Mathematics Journal",
    volume = 34,
      year = 1985,
     issue = 3,
     pages = "517--532",
      issn = "0022-2518",
     coden = "IUMJAB",
   mrclass = "",
}

amsrefs

\bib{iumj34029}{article}{
     author = {Cantrell, Robert},
     author = {Cosner, Chris},
      title = {On the Positone Problem for Elliptic Systems},
    journal = {Indiana Univ. Math. J.},
     volume = {34},
       year = {1985},
     number = {3},
      pages = {517 \ndash 532},
}