BibTeX

@ARTICLE{iumj33006,
    author = "D. Clark",
     title = "Toeplitz Operators and k-Spectral Sets",
   journal = "Indiana Univ. Math. J.",
  fjournal = "Indiana University Mathematics Journal",
    volume = 33,
      year = 1984,
     issue = 1,
     pages = "127--141",
      issn = "0022-2518",
     coden = "IUMJAB",
   mrclass = "",
}

amsrefs

\bib{iumj33006}{article}{
     author = {Clark, D.},
      title = {Toeplitz Operators and k-Spectral Sets},
    journal = {Indiana Univ. Math. J.},
     volume = {33},
       year = {1984},
     number = {1},
      pages = {127 \ndash 141},
}