Lareb Khalid, A. W. Mahesar, and B. R. Memon. “Network Analysis of 500 Flights of USA Air Transportation System”. University of Sindh Journal of Information and Communication Technology , Vol. 6, no. 4, Jan. 2023, pp. 25-30, https://sujo.usindh.edu.pk/index.php/USJICT/article/view/6204.