BibTeX

@ARTICLE{iumj52005,
    author = "M. Protter",
     title = "Uniqueness Theorems for the Tricomi Problem",
   journal = "Indiana Univ. Math. J.",
  fjournal = "Indiana University Mathematics Journal",
    volume = 2,
      year = 1953,
     issue = 1,
     pages = "107--114",
      issn = "0022-2518",
     coden = "IUMJAB",
   mrclass = "",
}

amsrefs

\bib{iumj52005}{article}{
     author = {Protter, M.},
      title = {Uniqueness Theorems for the Tricomi Problem},
    journal = {Indiana Univ. Math. J.},
     volume = {2},
       year = {1953},
     number = {1},
      pages = {107 \ndash 114},
}