IUMJ

BibTeX

@ARTICLE{iumj26081,
    author = "J. William Helton",
     title = "An Operator Algebra Approach to Partial Differential Equations; Propagation of Singularities and Spectral Theory",
   journal = "Indiana Univ. Math. J.",
  fjournal = "Indiana University Mathematics Journal",
    volume = 26,
      year = 1977,
     issue = 6,
     pages = "997--1018",
      issn = "0022-2518",
     coden = "IUMJAB",
   mrclass = "",
}

amsrefs

\bib{iumj26081}{article}{
     author = {Helton, J. William},
      title = {An Operator Algebra Approach to Partial Differential Equations; Propagation of Singularities and Spectral Theory},
    journal = {Indiana Univ. Math. J.},
     volume = {26},
       year = {1977},
     number = {6},
      pages = {997 \ndash 1018},
}