BibTeX

@ARTICLE{iumj3799,
    author = "C. Sundberg and Dechao Zheng",
     title = "The spectrum and essential spectrum of Toeplitz operators with harmonic symbols",
   journal = "Indiana Univ. Math. J.",
  fjournal = "Indiana University Mathematics Journal",
    volume = 59,
      year = 2010,
     issue = 1,
     pages = "385--394",
      issn = "0022-2518",
     coden = "IUMJAB",
   mrclass = "47B35;",
}

amsrefs

\bib{iumj3799}{article}{
     author = {Sundberg, C.},
     author = {Zheng, Dechao},
      title = {The spectrum and essential spectrum of Toeplitz operators with harmonic symbols},
    journal = {Indiana Univ. Math. J.},
     volume = {59},
       year = {2010},
     number = {1},
      pages = {385 \ndash 394},
}