BibTeX

@ARTICLE{iumj19041,
    author = "Harold Widom",
     title = "On Some Extremal Quantities Associated with Unbounded Sets in the Plane",
   journal = "Indiana Univ. Math. J.",
  fjournal = "Indiana University Mathematics Journal",
    volume = 19,
      year = 1970,
     issue = 5,
     pages = "439--449",
      issn = "0022-2518",
     coden = "IUMJAB",
   mrclass = "",
}

amsrefs

\bib{iumj19041}{article}{
     author = {Widom, Harold},
      title = {On Some Extremal Quantities Associated with Unbounded Sets in the Plane},
    journal = {Indiana Univ. Math. J.},
     volume = {19},
       year = {1970},
     number = {5},
      pages = {439 \ndash 449},
}