中国科学院数学与系统科学研究院期刊网
AMS
Positive Periodic Solutions of a Class of Non-autonomous Single Species Population Model with Delays and Feedback Control
Feng De CHEN, Xiao Xin CHEN, Jin De CAO, An Ping CHEN
Acta Mathematica Sinica . 2005, (6): 1319 -1336 .  DOI: 10.1007/s10114-005-0585-6