Ade Kartika Dewi, Emil R.Kaburuan, Gresshinta, Hendrico Andre, Tuga Mauritsus. (2020). Risk Analysis of PT XYZ E-Ticketing Information with Octave Method. International Journal of Control and Automation, 13(02), 1287- 1296. Retrieved from http://sersc.org/journals/index.php/IJCA/article/view/27016