@article{DBLP:journals/jat/LuzziMNN10,
  author    = {Laura Luzzi and
               Stefano Marmi and
               Hitoshi Nakada and
               Rie Natsui},
  title     = {Generalized Brjuno functions associated to alpha-continued
               fractions},
  journal   = {Journal of Approximation Theory},
  volume    = {162},
  number    = {1},
  year      = {2010},
  pages     = {24-41},
  ee        = {http://dx.doi.org/10.1016/j.jat.2009.02.004},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}