@Article{ 
  BarGof19,
  author = { Bardi, Martino and Goffi, Alessandro },
  title = { New strong maximum and comparison principles for fully nonlinear degenerate elliptic PDEs },
  journal = { Calc. Var. Partial Differential Equations },
  year = { 2019 },
  doi = { 10.1007/s00526-019-1620-2 },
  volume = { 58 },
  number = { no. 184 },
  pages = { 20 },
  URL = { http://cvgmt.sns.it/paper/4221/ },
  note = { cvgmt preprint}
}