MOHAMMED, Ra'ad Kadhim. Ultrasonic Distance Measurement Technique in Chair of Cripple Application. Kufa Journal of Engineering, Kufa, Najaf, IRAQ, v. 1, n. 2, p. 89–103, 2014. DOI: 10.30572/2018/KJE/121301. Disponível em: https://journal.uokufa.edu.iq/index.php/kje/article/view/1301. Acesso em: 7 aug. 2026.