Muthu Solayappan and  Kien Ming Ng and  Kim Leng Poh,  Perturbation Based Search Method for Solving Unconstrained Binary Quadratic Programming Problem.   journal   = {International Journal of Industrial and Manufacturing Engineering}, [online]. World Academy of Science, Engineering and Technology.
    January 2008, vol. 13(1). 30 - 36
    [viewed 20 April 2024]. Available from: https://publications.waset.org/pdf/13831.