, A. G. G. H. K. W. “Smart Cane Indicating a Safe free Path to Blind People Using Ultrasonic Sensor”. International Journal on Recent and Innovation Trends in Computing and Communication, [S. l.], v. 4, n. 2, p. 179–183, 2016. DOI: 10.17762/ijritcc.v4i2.1788. Disponível em: https://ijritcc.org/index.php/ijritcc/article/view/1788. Acesso em: 27 jul. 2024.