BibTeX

@ARTICLE{iumj21006,
    author = "James Caughran",
     title = "Polynomial Approximation and Spectral Properties of Composition Operators on H^2",
   journal = "Indiana Univ. Math. J.",
  fjournal = "Indiana University Mathematics Journal",
    volume = 21,
      year = 1972,
     issue = 1,
     pages = "81--84",
      issn = "0022-2518",
     coden = "IUMJAB",
   mrclass = "",
}

amsrefs

\bib{iumj21006}{article}{
     author = {Caughran, James},
      title = {Polynomial Approximation and Spectral Properties of Composition Operators on H^2},
    journal = {Indiana Univ. Math. J.},
     volume = {21},
       year = {1972},
     number = {1},
      pages = {81 \ndash 84},
}