@Article{ 
  CasMan16,
  author = { Castorina, Daniele and Mantegazza, Carlo },
  title = { Ancient Solutions of Semilinear Heat Equations on Riemannian Manifolds },
  journal = { Atti Accad. Naz. Lincei - Rend. Lincei Mat. Appl. },
  year = { 2017 },
  volume = { 28 },
  number = { 1 },
  pages = { 85-101 },
  URL = { http://cvgmt.sns.it/paper/3135/ },
  note = { cvgmt preprint}
}