@Article{ 
  caemirvit09,
  author = { Cañete, Antonio and Michele Miranda Jr.,  and Vittone, Davide },
  title = { Some isoperimetric problems in planes with density },
  journal = { J. Geom. Anal. },
  year = { 2010 },
  volume = { 20 },
  number = { 2 },
  pages = { 243-290 },
  URL = { http://cvgmt.sns.it/paper/950/ },
  note = { cvgmt preprint}
}