Sadiku, Matthew N. O., Yonghui Wang, Suxia Cui, and Sarhan M. Musa. “Cyber-Physical Systems: A Literature Review”. European Scientific Journal, ESJ 13, no. 36 (December 31, 2017): 52. Accessed May 3, 2024. https://eujournal.org/index.php/esj/article/view/10341.