@Article{ 
  paoste06,
  author = { Paolini, Emanuele and Stepanov, Eugene },
  title = { Connecting measures by means of branched transportation networks at finite cost },
  journal = { J. Math. Sciences (N.Y.) },
  year = { 2009 },
  volume = { 157 },
  number = { 6 },
  pages = { 858-873 },
  URL = { http://cvgmt.sns.it/paper/513/ },
  note = { cvgmt preprint}
}