BibTeX

@ARTICLE{iumj35036,
    author = "Patrizia Pucci and James Serrin",
     title = "A General Variational Identity",
   journal = "Indiana Univ. Math. J.",
  fjournal = "Indiana University Mathematics Journal",
    volume = 35,
      year = 1986,
     issue = 3,
     pages = "681--703",
      issn = "0022-2518",
     coden = "IUMJAB",
   mrclass = "",
}

amsrefs

\bib{iumj35036}{article}{
     author = {Pucci, Patrizia},
     author = {Serrin, James},
      title = {A General Variational Identity},
    journal = {Indiana Univ. Math. J.},
     volume = {35},
       year = {1986},
     number = {3},
      pages = {681 \ndash 703},
}