BibTeX

@ARTICLE{iumj21020,
    author = "Richard Holmes and B. Kripke",
     title = "Best Approximation by Compact Operators",
   journal = "Indiana Univ. Math. J.",
  fjournal = "Indiana University Mathematics Journal",
    volume = 21,
      year = 1972,
     issue = 3,
     pages = "255--263",
      issn = "0022-2518",
     coden = "IUMJAB",
   mrclass = "",
}

amsrefs

\bib{iumj21020}{article}{
     author = {Holmes, Richard},
     author = {Kripke, B.},
      title = {Best Approximation by Compact Operators},
    journal = {Indiana Univ. Math. J.},
     volume = {21},
       year = {1972},
     number = {3},
      pages = {255 \ndash 263},
}