BibTeX

@ARTICLE{iumj3476,
    author = "Filippo Morabito",
     title = "Index and nullity of the Gauss map of the Costa-Hoffman-Meeks surfaces",
   journal = "Indiana Univ. Math. J.",
  fjournal = "Indiana University Mathematics Journal",
    volume = 58,
      year = 2009,
     issue = 2,
     pages = "677--708",
      issn = "0022-2518",
     coden = "IUMJAB",
   mrclass = "58E12; 49Q05; 53A10;",
}

amsrefs

\bib{iumj3476}{article}{
     author = {Morabito, Filippo},
      title = {Index and nullity of the Gauss map of the Costa-Hoffman-Meeks surfaces},
    journal = {Indiana Univ. Math. J.},
     volume = {58},
       year = {2009},
     number = {2},
      pages = {677 \ndash 708},
}