中国科学院数学与系统科学研究院期刊网
AMS
The Cauchy Problem for Semilinear Hyperbolic Equations with Cross Discontinuous Data
Chen Shuxiang, Fang Daoyuan
Acta Mathematica Sinica . 1995, (4): 351 -364 .  DOI: 10.1007/BF02248745