Khlaf, B., Abdullah, G. (1970). Modifying Runge – Kutta methods with higher order derivative approximations. Journal of Kirkuk University Humanity Studies, 19(2), 84-98.
Bashir M. Khlaf; Ghanim Ghanim M.S. Abdullah. "Modifying Runge – Kutta methods with higher order derivative approximations". Journal of Kirkuk University Humanity Studies, 19, 2, 1970, 84-98.
Khlaf, B., Abdullah, G. (1970). 'Modifying Runge – Kutta methods with higher order derivative approximations', Journal of Kirkuk University Humanity Studies, 19(2), pp. 84-98.
Khlaf, B., Abdullah, G. Modifying Runge – Kutta methods with higher order derivative approximations. Journal of Kirkuk University Humanity Studies, 1970; 19(2): 84-98.