@Article{ 
  butsanste11,
  author = { Buttazzo, Giuseppe and Santambrogio, Filippo and Stepanov, Eugene },
  title = { Asymptotic optimal location of facilities in a competition between population and industries },
  journal = { Ann. Scuola Norm. Sup. Pisa Cl. Sci. },
  year = { 2013 },
  volume = { 12 },
  number = { 1 },
  pages = { 239–273 },
  URL = { http://cvgmt.sns.it/paper/819/ },
  note = { cvgmt preprint}
}