BibTeX

@ARTICLE{iumj23076,
    author = "Lawrence Harris",
     title = "Operator Extreme Points and the Numerical Range",
   journal = "Indiana Univ. Math. J.",
  fjournal = "Indiana University Mathematics Journal",
    volume = 23,
      year = 1974,
     issue = 10,
     pages = "937--947",
      issn = "0022-2518",
     coden = "IUMJAB",
   mrclass = "",
}

amsrefs

\bib{iumj23076}{article}{
     author = {Harris, Lawrence},
      title = {Operator Extreme Points and the Numerical Range},
    journal = {Indiana Univ. Math. J.},
     volume = {23},
       year = {1974},
     number = {10},
      pages = {937 \ndash 947},
}