Nittaya Kerdprasop and  Kittisak Kerdprasop,   Mining Frequent Patterns with Functional Programming.   journal   = {International Journal of Computer and Information Engineering}, [online]. World Academy of Science, Engineering and Technology.
    January 2007, vol. 1(1). 124 - 129
    [viewed 06 December 2021]. Available from: https://publications.waset.org/pdf/6340.