Anwar, Raja, Anazida Zainal, Saleem Iqbal, and Mahmood Bashir. 2018. “Key Security Challenges and Threats to Cyber-Physical Systems and Their Applications”. Quaid-E-Awam University Research Journal of Engineering, Science & Technology, Nawabshah. 16 (01), 31-35. http://publications.quest.edu.pk/ojs-3.1.1-4/index.php/qrj/article/view/43.