@Misc{ CasCatMan22, author = { Castorina, Daniele and Catino, Giovanni and Mantegazza, Carlo }, title = { Semilinear Li & Yau inequalities }, journal = { Ann. Mat. Pura Appl. }, year = { 2022 }, pages = { }, URL = { http://cvgmt.sns.it/paper/5412/ }, note = { cvgmt preprint} }