P.Palpandian, Harish.P, Naveen.K, Vasanthraj.M, Vijayraman.R. Blind Stick Using Ultrasonic. IJAST [Internet]. 2020May2 [cited 2024May5];29(7):168 -173. Available from: http://sersc.org/journals/index.php/IJAST/article/view/13202