Yaping Ren and  Yongkun Li,  Periodic Solutions of Recurrent Neural Networks with Distributed Delays and Impulses on Time Scales.   journal   = {International Journal of Mathematical and Computational Sciences}, [online]. World Academy of Science, Engineering and Technology.
    August 2011, vol. 56(8). 1351 - 1360
    [viewed 25 April 2024]. Available from: https://publications.waset.org/pdf/5571.