中国科学院数学与系统科学研究院期刊网
On the Growth of Solutions of Second Order Linear Di?erential Equations with Extremal Coeffcients
Jian Ren LONG, Peng Cheng WU, Zheng ZHANG
Acta Mathematica Sinica . 2013, (2): 365 -372 .  DOI: 10.1007/s10114-012-0648-4