@Misc{ 
  CoGaMaRi21,
  author = { Colombo, Giulio and Gama, Eddygledson Souza and Mari, Luciano and Rigoli, Marco },
  title = { Non-negative Ricci curvature and minimal graphs with linear growth },
  journal = {  },
  year = { 2021 },
  pages = { 33 },
  URL = { http://cvgmt.sns.it/paper/5391/ },
  note = { cvgmt preprint}
}