BibTeX

@ARTICLE{iumj16004,
    author = "Robert Borrelli",
     title = "The Singular, Second Order Oblique Derivative Problem",
   journal = "Indiana Univ. Math. J.",
  fjournal = "Indiana University Mathematics Journal",
    volume = 16,
      year = 1967,
     issue = 1,
     pages = "51--81",
      issn = "0022-2518",
     coden = "IUMJAB",
   mrclass = "",
}

amsrefs

\bib{iumj16004}{article}{
     author = {Borrelli, Robert},
      title = {The Singular, Second Order Oblique Derivative Problem},
    journal = {Indiana Univ. Math. J.},
     volume = {16},
       year = {1967},
     number = {1},
      pages = {51 \ndash 81},
}