SH, Z., Hamed, (2006). Numerical Solution of Varible Differential Equations Using Runge- Kutta Methods. , 9(2), 138-142.

Z. SH; Hamed. "Numerical Solution of Varible Differential Equations Using Runge- Kutta Methods". , 9, 2, 2006, 138-142.

SH, Z., Hamed, (2006). 'Numerical Solution of Varible Differential Equations Using Runge- Kutta Methods', , 9(2), pp. 138-142.

SH, Z., Hamed, Numerical Solution of Varible Differential Equations Using Runge- Kutta Methods. , 2006; 9(2): 138-142.