中国科学院数学与系统科学研究院期刊网
Strum Comparison Theorem of Solutions for Second Order Nonlinear Elliptic Differential Equations
Rong Kun ZHUANG, Bao Guo JIA, Qi Ru WANG
Acta Mathematica Sinica, Chinese Series . 2017, (6): 1037 -1046 .  DOI: 10.12386/A2017sxxb0090