BibTeX

@ARTICLE{iumj39012,
    author = "Steven Hudson",
     title = "Polynomial Approximation in Sobolev Spaces",
   journal = "Indiana Univ. Math. J.",
  fjournal = "Indiana University Mathematics Journal",
    volume = 39,
      year = 1990,
     issue = 1,
     pages = "199--228",
      issn = "0022-2518",
     coden = "IUMJAB",
   mrclass = "",
}

amsrefs

\bib{iumj39012}{article}{
     author = {Hudson, Steven},
      title = {Polynomial Approximation in Sobolev Spaces},
    journal = {Indiana Univ. Math. J.},
     volume = {39},
       year = {1990},
     number = {1},
      pages = {199 \ndash 228},
}