中国科学院数学与系统科学研究院期刊网
GLOBAL DICHOTOMY BEHAVIOR OF SOLUTIONS OF CLASS OF SECOND-ORDER NONLINEAR DIFFERENTIAL EQUATIONS
Yan WU, Xue Mei SONG
Acta Mathematicae Applicatae Sinica . 2004, (2): 291 -299 .  DOI: 10.12387/C2004034