BibTeX

@ARTICLE{iumj10025,
    author = "Binyamin Schwarz",
     title = "On the Extrema of the Frequencies of Nonhomogeneous Strings with Equimeasurable Density",
   journal = "Indiana Univ. Math. J.",
  fjournal = "Indiana University Mathematics Journal",
    volume = 10,
      year = 1961,
     issue = 3,
     pages = "401--422",
      issn = "0022-2518",
     coden = "IUMJAB",
   mrclass = "",
}

amsrefs

\bib{iumj10025}{article}{
     author = {Schwarz, Binyamin},
      title = {On the Extrema of the Frequencies of Nonhomogeneous Strings with Equimeasurable Density},
    journal = {Indiana Univ. Math. J.},
     volume = {10},
       year = {1961},
     number = {3},
      pages = {401 \ndash 422},
}