P.Palpandian, Harish.P, Naveen.K, Vasanthraj.M, Vijayraman.R. “Blind Stick Using Ultrasonic”. International Journal of Advanced Science and Technology 29, no. 7 (May 2, 2020): 168 - 173. Accessed May 6, 2024. http://sersc.org/journals/index.php/IJAST/article/view/13202.