@Article{ LiZhu16a, author = { Li, Yi and Zhu, Xiaorui }, title = { Harnack estimates for a heat-type equation under the Ricci flow }, journal = { Journal of Differential Equations }, year = { 2016 }, doi = { 10.1016/j.jde.2015.10.024 }, volume = { 260 }, number = { 4 }, pages = { 3270-3301 }, URL = { http://cvgmt.sns.it/paper/3278/ }, note = { cvgmt preprint} }