https://dds.las.ac.cn/service/document?appId=a1vacbnPuv9qJRzJvdNXfsesj9JbIa6e&appKey=sPBA4vANLzjnW1k5eufEcc4k7dxfNraW&ts=1763009180094&signature=e427f3984c1ddc27bbb7e2554e7197da&articleTitle=Harnack%27s+Inequality+for+Degenerate+and+Singular+Parabolic+Equations&articleAuthor=Emmanuele+DiBenedetto%2C+Ugo+Gianazza%2C+Vincenzo+Vespri&publicationTitle=Harnack%27s+Inequality+for+Degenerate+and+Singular+Parabolic+Equations&language=&publicationType=1&publishYear=2012&isn=9781461415831&publisher=Springer+New+York