Khaleel, Shahad, Maher Salloom, and Ahmed Mohammed. “Comparison Sequences of Pick and Place System Controlled Using PLC”. Al-Nahrain Journal for Engineering Sciences 23, no. 4 (December 25, 2020): 397-407. Accessed August 2, 2021. https://nahje.com/index.php/main/article/view/NJES.23040397.