Yi-Fan Zhu and  Wei Zhang and  Xuan Zhou and  Qun Li and  Yong-Lin Lei,  Approximation Incremental Training Algorithm Based on a Changeable Training Set.   journal   = {International Journal of Computer and Information Engineering}, [online]. World Academy of Science, Engineering and Technology.
    September 2011, vol. 57(9). 1026 - 1035
    [viewed 25 September 2020]. Available from: https://publications.waset.org/pdf/5883.