BibTeX

@ARTICLE{iumj2162,
    author = "Bogdan Bojarski and Piotr Hajlasz and Pawel Strzelecki",
     title = "Improved $C\sp {k,\lambda}$ approximation of higher order Sobolev functions in norm and capacity",
   journal = "Indiana Univ. Math. J.",
  fjournal = "Indiana University Mathematics Journal",
    volume = 51,
      year = 2002,
     issue = 3,
     pages = "507--540",
      issn = "0022-2518",
     coden = "IUMJAB",
   mrclass = "",
}

amsrefs

\bib{iumj2162}{article}{
     author = {Bojarski, Bogdan},
     author = {Hajlasz, Piotr},
     author = {Strzelecki, Pawel},
      title = {Improved $C\sp {k,\lambda}$ approximation of higher order Sobolev functions in norm and capacity},
    journal = {Indiana Univ. Math. J.},
     volume = {51},
       year = {2002},
     number = {3},
      pages = {507 \ndash 540},
}