中国科学院数学与系统科学研究院期刊网
Sharp Conditions of Global Existence for the Nonlinear Klein–Gordon Equation
Wen Yi HUANG, Shao Yong LAI, Jian ZHANG
Acta Mathematica Sinica, Chinese Series . 2011, (3): 435 -442 .  DOI: 10.12386/A2011sxxb0044