@Article{ CasMan16, author = { Daniele Castorina and Carlo Mantegazza }, 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 }, }