ZHI TING, W. .; BINTI MOHD ESA, N. A. .; HUI YUEN, C. .; VAJRAVELU , A. .; ABD WAHAB, M. H. . AN INITIAL STEP TO DESIGN IN AIDING EQUIPMENT FOR BLIND USING ULTRASONIC SYSTEM. International Journal of Advanced Computer Systems and Software Engineering, [S. l.], v. 2, n. 3, p. 30–34, 2021. Disponível em: https://journal.scientiaca.org/index.php/ijacsse/article/view/44. Acesso em: 15 jan. 2025.