中国科学院数学与系统科学研究院期刊网
AMS
A Free Boundary Problem for Quasilinear Degenerate Parabolic Equations with General Degeneracy
Zhao Junning, Li Yi
Acta Mathematica Sinica . 1990, (4): 364 -382 .  DOI: 10.1007/BF02107970