BibTeX

@ARTICLE{iumj40011,
    author = "W. Pfeffer",
     title = "A Descriptive Definition of a Variational Integral and Applications",
   journal = "Indiana Univ. Math. J.",
  fjournal = "Indiana University Mathematics Journal",
    volume = 40,
      year = 1991,
     issue = 1,
     pages = "259--270",
      issn = "0022-2518",
     coden = "IUMJAB",
   mrclass = "",
}

amsrefs

\bib{iumj40011}{article}{
     author = {Pfeffer, W.},
      title = {A Descriptive Definition of a Variational Integral and Applications},
    journal = {Indiana Univ. Math. J.},
     volume = {40},
       year = {1991},
     number = {1},
      pages = {259 \ndash 270},
}