Nicholas Teo Yong Yeow, “Robotic Delivery System for Multi-Storey Condominium Complexes”, jeva, vol. 3, no. 1, pp. 1–15, Jul. 2022, Accessed: Jul. 17, 2024. [Online]. Available: https://penerbit.uthm.edu.my/ojs/index.php/jeva/article/view/10385