@Misc{ 
  vanKap18,
  author = { Kappeler, Thomas and van den Berg, Michiel },
  title = { On the $L^p$ norm of the torsion function },
  journal = {  },
  year = { 2018 },
  pages = {  },
  URL = { http://cvgmt.sns.it/paper/3784/ },
  note = { cvgmt preprint}
}