中国科学院数学与系统科学研究院期刊网
THE LATERAL BOUNDARY OF THE SUPPORT OF WEAK SOLUTIONS OF THE FILTRATION EQUATION IN ONE DIMENSION
Shuqiao Wang 
Acta Mathematica Sinica, Chinese Series . 1983, (2): 199 -219 .  DOI: 10.12386/A1983sxxb0024