Kaihong Zhao and Jiuqing Liu, Multiple Positive Periodic Solutions of a Delayed Predatory-Prey System with Holling Type II Functional Response. journal = {International Journal of Mathematical and Computational Sciences}, [online]. World Academy of Science, Engineering and Technology. September 2013, vol. 75(3). 440 - 444 [viewed 20 April 2024]. Available from: https://publications.waset.org/pdf/16989.