S. Balaji and  V. Swaminathan and  K. Kannan,  Approximating Maximum Weighted Independent Set Using Vertex Support.   journal   = {International Journal of Mathematical and Computational Sciences}, [online]. World Academy of Science, Engineering and Technology.
    November 2009, vol. 35(11). 963 - 968
    [viewed 27 April 2024]. Available from: https://publications.waset.org/pdf/12153.