WASET
    Kamal K.Bharadwaj and  Rekha Kandwal,  Cumulative Learning based on Dynamic Clustering of Hierarchical Production Rules(HPRs).   journal   = {International Journal of Computer and Information Engineering}, [online]. World Academy of Science, Engineering and Technology.
    August 2007, vol. 8(8). 2615 - 2620
    [viewed 25 April 2024]. Available from: https://publications.waset.org/pdf/14705.