Abo Hatem, Ahmad Hatem Taj Al Deen, and Mustafa Rafeek Hasan. “A Kinetic and Kinematic Study for Plane Pantograph Machine”. Journal of Natural Sciences, Life and Applied Sciences, vol. 3, no. 3, Sept. 2019, pp. 18-1, https://doi.org/10.26389/AJSRP.A120519.