BibTeX

@ARTICLE{iumj40054,
    author = "William Cohn",
     title = "Tangential Characterizations of Hardy-Sobolev Spaces",
   journal = "Indiana Univ. Math. J.",
  fjournal = "Indiana University Mathematics Journal",
    volume = 40,
      year = 1991,
     issue = 4,
     pages = "1221--1249",
      issn = "0022-2518",
     coden = "IUMJAB",
   mrclass = "",
}

amsrefs

\bib{iumj40054}{article}{
     author = {Cohn, William},
      title = {Tangential Characterizations of Hardy-Sobolev Spaces},
    journal = {Indiana Univ. Math. J.},
     volume = {40},
       year = {1991},
     number = {4},
      pages = {1221 \ndash 1249},
}