@Article{ 
  Met14,
  author = { Metafune, Giorgio and Pallara, Diego and Wacker, Marcus },
  title = { Compactness properties of Feller semigroups },
  journal = { Studia Mathematica },
  year = { 2002 },
  volume = { 153 },
  pages = { 179-206 },
  URL = { http://cvgmt.sns.it/paper/2550/ },
  note = { cvgmt preprint}
}