中国科学院数学与系统科学研究院期刊网
The Limit Circle Criteria for a Class of Dynamic Equations on Time Scales
ZHENG Zhaowen, SHAO Jing, ZHANG Bin
Acta Mathematicae Applicatae Sinica . 2010, (1): 814 -823 .  DOI: 10.12387/C2010024