كمال محمود عفيصه, محمد ياسين صبيح and شوكت شاهين شاهين 2020. A Study on Structural, Mechanical, Speed and Frequency Properties of the Ultrasonic Generated by the Compression Component {\mathbf{Co}}_\mathbf{x}{\mathbf{Ni}}_{\mathbf{1}-\mathbf{x}}{\mathbf{Fe}}_\mathbf{2}\mathbf{O}_\mathbf{4} at ratios x = (0.0, 1.0). Latakia University Journal -Basic Sciences Series. 42, 5 (Dec. 2020).