Ahmed, Ausama H., et al. “LOW COST HARDWARE IN THE LOOP CONTROL SYSTEM USING MICROCONTROLLERS”. Conference On Engineering Science and Technology, vol. 6, no. 5، مجلة الجامعة الأسمرية, Dec. 2021, pp. 606-87, https://conf.asmarya.edu.ly/index.php/cest2021/article/view/143.