BibTeX

@ARTICLE{iumj55006,
    author = "Dietrich Morgenstern",
     title = "Singulare Storungstheorie Partieller Differentialgleichungen",
   journal = "Indiana Univ. Math. J.",
  fjournal = "Indiana University Mathematics Journal",
    volume = 5,
      year = 1956,
     issue = 1,
     pages = "203--216",
      issn = "0022-2518",
     coden = "IUMJAB",
   mrclass = "",
}

amsrefs

\bib{iumj55006}{article}{
     author = {Morgenstern, Dietrich},
      title = {Singulare Storungstheorie Partieller Differentialgleichungen},
    journal = {Indiana Univ. Math. J.},
     volume = {5},
       year = {1956},
     number = {1},
      pages = {203 \ndash 216},
}