@Article{ 
  paoste04,
  author = { Paolini, Emanuele and Stepanov, Eugene },
  title = { Qualitative properties of maximum distance minimizers and average distance minimizers in $\mathbf R^n$ },
  journal = { J. Math. Sciences (N.Y.) },
  year = { 2004 },
  volume = { 122 },
  number = { 3 },
  pages = { 105-122 },
  URL = { http://cvgmt.sns.it/paper/490/ },
  note = { cvgmt preprint}
}