Iqbal, J., Khan, H., Tsagarakis, N. G., & Caldwell, D. G. (2014). A novel exoskeleton robotic system for hand rehabilitation - Conceptualization to prototyping. Biocybernetics and Biomedical Engineering, 34(2), 79-89. https://doi.org/10.1016/j.bbe.2014.01.003