Fahad Shahbaz Khan and  Rao Muhammad Anwer and  Olof Torgersson,  Using Data Clustering in Oral Medicine.   journal   = {International Journal of Computer and Information Engineering}, [online]. World Academy of Science, Engineering and Technology.
    January 2008, vol. 13(1). 119 - 123
    [viewed 15 August 2020]. Available from: https://publications.waset.org/pdf/1717.