Sathinee Malee and  Ronnason Chinram,  k-Fuzzy Ideals of Ternary Semirings.   journal   = {International Journal of Mathematical and Computational Sciences}, [online]. World Academy of Science, Engineering and Technology.
    July 2010, vol. 43(7). 889 - 893
    [viewed 26 January 2020]. Available from: https://publications.waset.org/pdf/2449.