AN ULTRASONIC SENSING SYSTEM FOR ASSISTING VISUALLY IMPAIRED PERSON. Jurnal Teknologi (Sciences & Engineering), [S. l.], v. 78, n. 7-4, 2016. DOI: 10.11113/jt.v78.9433. Disponível em: https://journals.utm.my/jurnalteknologi/article/view/9433.. Acesso em: 10 apr. 2025.