BibTeX

@ARTICLE{iumj19021,
    author = "G. Duff and A. Tsutsumi",
     title = "On Domains of Dependence and Partial Lacunas for Symmetric Hyperbolic Systems",
   journal = "Indiana Univ. Math. J.",
  fjournal = "Indiana University Mathematics Journal",
    volume = 19,
      year = 1970,
     issue = 3,
     pages = "219--237",
      issn = "0022-2518",
     coden = "IUMJAB",
   mrclass = "",
}

amsrefs

\bib{iumj19021}{article}{
     author = {Duff, G.},
     author = {Tsutsumi, A.},
      title = {On Domains of Dependence and Partial Lacunas for Symmetric Hyperbolic Systems},
    journal = {Indiana Univ. Math. J.},
     volume = {19},
       year = {1970},
     number = {3},
      pages = {219 \ndash 237},
}