BibTeX

@ARTICLE{iumj20019,
    author = "L. Wallen",
     title = "Decomposition of Semi-Groups of Partial Isometries",
   journal = "Indiana Univ. Math. J.",
  fjournal = "Indiana University Mathematics Journal",
    volume = 20,
      year = 1971,
     issue = 3,
     pages = "207--212",
      issn = "0022-2518",
     coden = "IUMJAB",
   mrclass = "",
}

amsrefs

\bib{iumj20019}{article}{
     author = {Wallen, L.},
      title = {Decomposition of Semi-Groups of Partial Isometries},
    journal = {Indiana Univ. Math. J.},
     volume = {20},
       year = {1971},
     number = {3},
      pages = {207 \ndash 212},
}