bbas Yakubu, Usman A, Mustafa Mamat, Mohamad Afendee Mohamed, Sukono ., and Mohd Rivaie. 2018. “Secant Condition Free of a Spectral PRP Conjugate Gradient Method”. International Journal of Engineering & Technology 7 (3.28): 325-28. https://doi.org/10.14419/ijet.v7i3.28.23470.