Ahmad Alhawarat and  Mustafa Mamat and  Mohd Rivaie and  Ismail Mohd,  A New Modification of Nonlinear Conjugate Gradient Coefficients with Global Convergence Properties.   journal   = {International Journal of Mathematical and Computational Sciences}, [online]. World Academy of Science, Engineering and Technology.
    August 2014, vol. 85(1). 54 - 60
    [viewed 08 December 2021]. Available from: https://publications.waset.org/pdf/9997245.