@misc{Zhao_Chang-Jian_On_2002,
 author={Zhao, Chang-Jian and Wang, Ke},
 volume={50},
 editor={Polska Akademia Nauk.},
 number={2},
 copyright={Rights Reserved - Restricted Access},
 address={Warsaw},
 howpublished={online},
 year={2002},
 publisher={Polska Akademia Nauk. Centrum Upowszechniania Nauki.},
 language={eng},
 title={On the existence of positive periodic solutions of a delay logistic equation},
 type={Text},
}