WASET
    Decha Samana and  Vites Longani,  Lower Bounds of Some Small Ramsey Numbers.   journal   = {International Journal of Mathematical and Computational Sciences}, [online]. World Academy of Science, Engineering and Technology.
    September 2012, vol. 69(9). 1369 - 1371
    [viewed 29 March 2024]. Available from: https://publications.waset.org/pdf/6768.