@Article{ 
  MonSem18,
  author = { Mondino, Andrea and Semola, Daniele },
  title = { Polya-Szego inequality and Dirichlet $p$-spectral gap for non-smooth spaces with Ricci curvature bounded below },
  journal = { Journal de Mathématiques Pures et Appliquées },
  year = { 2018 },
  doi = { 10.1016/j.matpur.2019.10.005 },
  pages = {  },
  URL = { http://cvgmt.sns.it/paper/3939/ },
  note = { cvgmt preprint}
}