@Article{ 
  SpoVel21,
  author = { Spolaor, Luca and Velichkov, Bozhidar },
  title = { On the logarithmic epiperimetric inequality for the obstacle problem },
  journal = { Mathematics in Engineering },
  year = { 2021 },
  doi = { 10.3934/mine.2021004 },
  volume = { 3 },
  pages = { 1--42 },
  URL = { http://cvgmt.sns.it/paper/5999/ },
  note = { cvgmt preprint}
}