BibTeX

@ARTICLE{iumj20088,
    author = "I. Singer",
     title = "Operator Theory and Periodicity",
   journal = "Indiana Univ. Math. J.",
  fjournal = "Indiana University Mathematics Journal",
    volume = 20,
      year = 1971,
     issue = 10,
     pages = "949--951",
      issn = "0022-2518",
     coden = "IUMJAB",
   mrclass = "",
}

amsrefs

\bib{iumj20088}{article}{
     author = {Singer, I.},
      title = {Operator Theory and Periodicity},
    journal = {Indiana Univ. Math. J.},
     volume = {20},
       year = {1971},
     number = {10},
      pages = {949 \ndash 951},
}