Yunquan Ke and  Chunfang Miao,  Exponential Stability of Periodic Solutions in Inertial Neural Networks with Unbounded Delay.   journal   = {International Journal of Mathematical and Computational Sciences}, [online]. World Academy of Science, Engineering and Technology.
    September 2013, vol. 75(3). 477 - 486
    [viewed 23 February 2020]. Available from: https://publications.waset.org/pdf/16992.