BibTeX

@ARTICLE{iumj18055,
    author = "Robert Sacker",
     title = "A Perturbation Theorem for Invariant Manifolds and Holder Countinuity*",
   journal = "Indiana Univ. Math. J.",
  fjournal = "Indiana University Mathematics Journal",
    volume = 18,
      year = 1969,
     issue = 8,
     pages = "705--762",
      issn = "0022-2518",
     coden = "IUMJAB",
   mrclass = "",
}

amsrefs

\bib{iumj18055}{article}{
     author = {Sacker, Robert},
      title = {A Perturbation Theorem for Invariant Manifolds and Holder Countinuity*},
    journal = {Indiana Univ. Math. J.},
     volume = {18},
       year = {1969},
     number = {8},
      pages = {705 \ndash 762},
}