BibTeX

@ARTICLE{iumj24030,
    author = "John Bunce and James Deddens",
     title = "Subspace Approximants and GCR Operators",
   journal = "Indiana Univ. Math. J.",
  fjournal = "Indiana University Mathematics Journal",
    volume = 24,
      year = 1975,
     issue = 4,
     pages = "341--349",
      issn = "0022-2518",
     coden = "IUMJAB",
   mrclass = "",
}

amsrefs

\bib{iumj24030}{article}{
     author = {Bunce, John},
     author = {Deddens, James},
      title = {Subspace Approximants and GCR Operators},
    journal = {Indiana Univ. Math. J.},
     volume = {24},
       year = {1975},
     number = {4},
      pages = {341 \ndash 349},
}