Farhad Asadi and  S. Hossein Sadati,  Investigation of Improved Chaotic Signal Tracking by Echo State Neural Networks and Multilayer Perceptron via Training of Extended Kalman Filter Approach.   journal   = {International Journal of Electronics and Communication Engineering}, [online]. World Academy of Science, Engineering and Technology.
    November 2018, vol. 144(12). 875 - 883
    [viewed 23 October 2019]. Available from: https://publications.waset.org/pdf/10009838.