BibTeX

@ARTICLE{iumj21085,
    author = "Martin Schechter",
     title = "Quantities Related to Strictly Singular Operators",
   journal = "Indiana Univ. Math. J.",
  fjournal = "Indiana University Mathematics Journal",
    volume = 21,
      year = 1972,
     issue = 11,
     pages = "1061--1071",
      issn = "0022-2518",
     coden = "IUMJAB",
   mrclass = "",
}

amsrefs

\bib{iumj21085}{article}{
     author = {Schechter, Martin},
      title = {Quantities Related to Strictly Singular Operators},
    journal = {Indiana Univ. Math. J.},
     volume = {21},
       year = {1972},
     number = {11},
      pages = {1061 \ndash 1071},
}