T. Suresh Kumar and  M. Arthanari and  N. Shanthi,  A Comparative Analysis of Different Web Content Mining Tools.   journal   = {International Journal of Computer and Information Engineering}, [online]. World Academy of Science, Engineering and Technology.
    November 2014, vol. 93(9). 1684 - 1688
    [viewed 21 October 2021]. Available from: https://publications.waset.org/pdf/10000000.