Shalal, Noor S., and Wajdi S. Aboud. “Robotic Exoskeleton: A Compact, Portable, and Constructing Using 3D Printer Technique for Wrist-Forearm Rehabilitation”. Al-Nahrain Journal for Engineering Sciences, vol. 23, no. 3, Nov. 2020, pp. 238-4, https://doi.org/10.29194/NJES.23030238.