BibTeX

@ARTICLE{iumj17055,
    author = "Eutiquio Young",
     title = "The Characteristic Initial Value Problem for the Wave Equation in N Dimensions",
   journal = "Indiana Univ. Math. J.",
  fjournal = "Indiana University Mathematics Journal",
    volume = 17,
      year = 1968,
     issue = 9,
     pages = "885--889",
      issn = "0022-2518",
     coden = "IUMJAB",
   mrclass = "",
}

amsrefs

\bib{iumj17055}{article}{
     author = {Young, Eutiquio},
      title = {The Characteristic Initial Value Problem for the Wave Equation in N Dimensions},
    journal = {Indiana Univ. Math. J.},
     volume = {17},
       year = {1968},
     number = {9},
      pages = {885 \ndash 889},
}