WASET
    Kejun Zhuang and  Zhaohui Wen,  Global Existence of Periodic Solutions in a Delayed Tri–neuron Network.   journal   = {International Journal of Mathematical and Computational Sciences}, [online]. World Academy of Science, Engineering and Technology.
    July 2011, vol. 55(7). 993 - 995
    [viewed 11 May 2024]. Available from: https://publications.waset.org/pdf/1424.