BibTeX

@ARTICLE{iumj20035,
    author = "H. Fattorini",
     title = "Uniformly Bounded Cosine Functions in Hilbert Space",
   journal = "Indiana Univ. Math. J.",
  fjournal = "Indiana University Mathematics Journal",
    volume = 20,
      year = 1971,
     issue = 5,
     pages = "411--425",
      issn = "0022-2518",
     coden = "IUMJAB",
   mrclass = "",
}

amsrefs

\bib{iumj20035}{article}{
     author = {Fattorini, H.},
      title = {Uniformly Bounded Cosine Functions in Hilbert Space},
    journal = {Indiana Univ. Math. J.},
     volume = {20},
       year = {1971},
     number = {5},
      pages = {411 \ndash 425},
}