BibTeX

@ARTICLE{iumj28059,
    author = "Sandy Grabiner",
     title = "Operator Ranges and Invariant Subspaces",
   journal = "Indiana Univ. Math. J.",
  fjournal = "Indiana University Mathematics Journal",
    volume = 28,
      year = 1979,
     issue = 5,
     pages = "845--857",
      issn = "0022-2518",
     coden = "IUMJAB",
   mrclass = "",
}

amsrefs

\bib{iumj28059}{article}{
     author = {Grabiner, Sandy},
      title = {Operator Ranges and Invariant Subspaces},
    journal = {Indiana Univ. Math. J.},
     volume = {28},
       year = {1979},
     number = {5},
      pages = {845 \ndash 857},
}