BibTeX

@ARTICLE{iumj43039,
    author = "Rajendra Bhatia and K. Sinha",
     title = "Variation of Real Powers of Positive Operators",
   journal = "Indiana Univ. Math. J.",
  fjournal = "Indiana University Mathematics Journal",
    volume = 43,
      year = 1994,
     issue = 3,
     pages = "913--925",
      issn = "0022-2518",
     coden = "IUMJAB",
   mrclass = "",
}

amsrefs

\bib{iumj43039}{article}{
     author = {Bhatia, Rajendra},
     author = {Sinha, K.},
      title = {Variation of Real Powers of Positive Operators},
    journal = {Indiana Univ. Math. J.},
     volume = {43},
       year = {1994},
     number = {3},
      pages = {913 \ndash 925},
}