BibTeX

@ARTICLE{iumj39041,
    author = "Nina Zorboska",
     title = "Composition Operators on S_a Spaces",
   journal = "Indiana Univ. Math. J.",
  fjournal = "Indiana University Mathematics Journal",
    volume = 39,
      year = 1990,
     issue = 3,
     pages = "847--857",
      issn = "0022-2518",
     coden = "IUMJAB",
   mrclass = "",
}

amsrefs

\bib{iumj39041}{article}{
     author = {Zorboska, Nina},
      title = {Composition Operators on S_a Spaces},
    journal = {Indiana Univ. Math. J.},
     volume = {39},
       year = {1990},
     number = {3},
      pages = {847 \ndash 857},
}