中国科学院数学与系统科学研究院期刊网
PERIODIC SOLUTIONS OF A ECOLOGICAL MODEL OF MICROBES
Bi Wen LI, Zheng Qiu ZHANG, Zhi Cheng WANG
Acta Mathematicae Applicatae Sinica . 2004, (2): 210 -217 .  DOI: 10.12387/C2004024