Lakshmi Prabha P, R. Nair V, Nair A, Debroy S, Debroy S, Amit Patro K. Limb flexion-extension counter using IR proximity sensor. IJET [Internet]. 2018 Mar. 19 [cited 2024 Nov. 24];7(2.8):182-5. Available from: https://sciencepubco.com/index.php/ijet/article/view/10354