BibTeX

@ARTICLE{iumj16007,
    author = "R. Douglas",
     title = "On Factoring Positive Operator Functions",
   journal = "Indiana Univ. Math. J.",
  fjournal = "Indiana University Mathematics Journal",
    volume = 16,
      year = 1967,
     issue = 2,
     pages = "119--126",
      issn = "0022-2518",
     coden = "IUMJAB",
   mrclass = "",
}

amsrefs

\bib{iumj16007}{article}{
     author = {Douglas, R.},
      title = {On Factoring Positive Operator Functions},
    journal = {Indiana Univ. Math. J.},
     volume = {16},
       year = {1967},
     number = {2},
      pages = {119 \ndash 126},
}