@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} }