BibTeX

@ARTICLE{iumj54027,
    author = "M. Protter",
     title = "Uniqueness Theorems for the Tricomi Problem. II",
   journal = "Indiana Univ. Math. J.",
  fjournal = "Indiana University Mathematics Journal",
    volume = 4,
      year = 1955,
     issue = 5,
     pages = "721--732",
      issn = "0022-2518",
     coden = "IUMJAB",
   mrclass = "",
}

amsrefs

\bib{iumj54027}{article}{
     author = {Protter, M.},
      title = {Uniqueness Theorems for the Tricomi Problem. II},
    journal = {Indiana Univ. Math. J.},
     volume = {4},
       year = {1955},
     number = {5},
      pages = {721 \ndash 732},
}