BibTeX

@ARTICLE{iumj2552,
    author = "Gustavo Garrigos and Eugenio Hernandez",
     title = "Sharp Jackson and Bernstein inequalities for $N$-term approximation in sequence spaces with applications",
   journal = "Indiana Univ. Math. J.",
  fjournal = "Indiana University Mathematics Journal",
    volume = 53,
      year = 2004,
     issue = 6,
     pages = "1741--1764",
      issn = "0022-2518",
     coden = "IUMJAB",
   mrclass = "41A17; 42C40;",
}

amsrefs

\bib{iumj2552}{article}{
     author = {Garrigos, Gustavo},
     author = {Hernandez, Eugenio},
      title = {Sharp Jackson and Bernstein inequalities for $N$-term approximation in sequence spaces with applications},
    journal = {Indiana Univ. Math. J.},
     volume = {53},
       year = {2004},
     number = {6},
      pages = {1741 \ndash 1764},
}