BibTeX

@ARTICLE{iumj10006,
    author = "Gian-Carlo Rota",
     title = "On the Spectra of Singular Boundary Value Problems",
   journal = "Indiana Univ. Math. J.",
  fjournal = "Indiana University Mathematics Journal",
    volume = 10,
      year = 1961,
     issue = 1,
     pages = "83--90",
      issn = "0022-2518",
     coden = "IUMJAB",
   mrclass = "",
}

amsrefs

\bib{iumj10006}{article}{
     author = {Rota, Gian-Carlo},
      title = {On the Spectra of Singular Boundary Value Problems},
    journal = {Indiana Univ. Math. J.},
     volume = {10},
       year = {1961},
     number = {1},
      pages = {83 \ndash 90},
}