BibTeX

@ARTICLE{iumj28006,
    author = "Nicholas Hanges",
     title = "Parametrices and Propagation of Singularities for Operators with Non-Involutive Characteristics",
   journal = "Indiana Univ. Math. J.",
  fjournal = "Indiana University Mathematics Journal",
    volume = 28,
      year = 1979,
     issue = 1,
     pages = "87--97",
      issn = "0022-2518",
     coden = "IUMJAB",
   mrclass = "",
}

amsrefs

\bib{iumj28006}{article}{
     author = {Hanges, Nicholas},
      title = {Parametrices and Propagation of Singularities for Operators with Non-Involutive Characteristics},
    journal = {Indiana Univ. Math. J.},
     volume = {28},
       year = {1979},
     number = {1},
      pages = {87 \ndash 97},
}