Lili Wang,  Almost Periodic Solution for an Impulsive Neural Networks with Distributed Delays.   journal   = {International Journal of Mathematical and Computational Sciences}, [online]. World Academy of Science, Engineering and Technology.
    September 2013, vol. 75(3). 458 - 467
    [viewed 26 February 2020]. Available from: https://publications.waset.org/pdf/17002.