D.Lakshminarayana, P.Vaishnavi Devi, and B.Venkanna. “DESIGN AND IMPLEMENTATION OF A CONTROLLING SYSTEM FOR PHYSICAL DISABLED PEOPLE”. International Journal of Intellectual Advancements and Research in Engineering Computations, vol. 3, no. 3, Mar. 2015, pp. 138-43, https://ijiarec.com/ijiarec/article/view/1299.