@Article{ 
  SteTre15,
  author = { Stepanov, Eugene and Trevisan, Dario },
  title = { Three superposition principles: currents, continuity equations and
  curves of measures },
  journal = { J. Funct. Anal. },
  year = { 2017 },
  doi = { 10.1016/j.jfa.2016.10.025 },
  volume = { 272 },
  pages = { 1044-1103 },
  URL = { http://cvgmt.sns.it/paper/2837/ },
  note = { cvgmt preprint}
}