BibTeX

@ARTICLE{iumj20059,
    author = "Arthur Obrock",
     title = "Grotzsch Domains and Teichmuller Inequalities",
   journal = "Indiana Univ. Math. J.",
  fjournal = "Indiana University Mathematics Journal",
    volume = 20,
      year = 1971,
     issue = 8,
     pages = "739--751",
      issn = "0022-2518",
     coden = "IUMJAB",
   mrclass = "",
}

amsrefs

\bib{iumj20059}{article}{
     author = {Obrock, Arthur},
      title = {Grotzsch Domains and Teichmuller Inequalities},
    journal = {Indiana Univ. Math. J.},
     volume = {20},
       year = {1971},
     number = {8},
      pages = {739 \ndash 751},
}