Mohapatra, Badri Narayan, Rashmita Kumari Mohapatra, Manthan Mirpagar, and Altamashali Quershi. “Ultrasonic Based Easy Parking System Based on Microcontroller”. International Journal of Innovative Technology and Interdisciplinary Sciences 3, no. 2 (April 14, 2020): 429-434. Accessed July 12, 2020. http://ijitis.org/index.php/ijitis/article/view/47.