BibTeX

@ARTICLE{iumj28021,
    author = "S. Lee",
     title = "Perturbations of Operators, with Application to Ordinary Differential Operators",
   journal = "Indiana Univ. Math. J.",
  fjournal = "Indiana University Mathematics Journal",
    volume = 28,
      year = 1979,
     issue = 2,
     pages = "291--309",
      issn = "0022-2518",
     coden = "IUMJAB",
   mrclass = "",
}

amsrefs

\bib{iumj28021}{article}{
     author = {Lee, S.},
      title = {Perturbations of Operators, with Application to Ordinary Differential Operators},
    journal = {Indiana Univ. Math. J.},
     volume = {28},
       year = {1979},
     number = {2},
      pages = {291 \ndash 309},
}