BibTeX

@ARTICLE{iumj4809,
    author = "Liz Vivas",
     title = "Degenerate characteristic directions for maps tangent to the identity",
   journal = "Indiana Univ. Math. J.",
  fjournal = "Indiana University Mathematics Journal",
    volume = 61,
      year = 2012,
     issue = 6,
     pages = "2019--2040",
      issn = "0022-2518",
     coden = "IUMJAB",
   mrclass = "",
}

amsrefs

\bib{iumj4809}{article}{
     author = {Vivas, Liz},
      title = {Degenerate characteristic directions for maps tangent to the identity},
    journal = {Indiana Univ. Math. J.},
     volume = {61},
       year = {2012},
     number = {6},
      pages = {2019 \ndash 2040},
}