BibTeX

@ARTICLE{iumj21054,
    author = "Hubert Berens and George Lorentz",
     title = "Inverse Theorems for Bernstein Polynomials",
   journal = "Indiana Univ. Math. J.",
  fjournal = "Indiana University Mathematics Journal",
    volume = 21,
      year = 1972,
     issue = 8,
     pages = "693--708",
      issn = "0022-2518",
     coden = "IUMJAB",
   mrclass = "",
}

amsrefs

\bib{iumj21054}{article}{
     author = {Berens, Hubert},
     author = {Lorentz, George},
      title = {Inverse Theorems for Bernstein Polynomials},
    journal = {Indiana Univ. Math. J.},
     volume = {21},
       year = {1972},
     number = {8},
      pages = {693 \ndash 708},
}