BibTeX

@ARTICLE{iumj19033,
    author = "Charles Coffman",
     title = "On a Class of Non-Linear Elliptic Boundary Value Problems",
   journal = "Indiana Univ. Math. J.",
  fjournal = "Indiana University Mathematics Journal",
    volume = 19,
      year = 1970,
     issue = 4,
     pages = "351--356",
      issn = "0022-2518",
     coden = "IUMJAB",
   mrclass = "",
}

amsrefs

\bib{iumj19033}{article}{
     author = {Coffman, Charles},
      title = {On a Class of Non-Linear Elliptic Boundary Value Problems},
    journal = {Indiana Univ. Math. J.},
     volume = {19},
       year = {1970},
     number = {4},
      pages = {351 \ndash 356},
}