中国科学院数学与系统科学研究院期刊网
Gradient Estimate for the Positive Solutions of Lu=0 and Lu=∂u/∂t on Conformal Solitons
Xiang LI, Jun SUN
Acta Mathematica Sinica . 2021, (11): 1768 -1782 .  DOI: 10.1007/s10114-021-0162-7