A. Rusdiansyah, D. Mariana, H. Pradana, and N. A. Wessiani, “Model of Dynamic Pricing for Two Parallels Flights with Multiple Fare Classes Based on Passenger Choice Behavior”, Jurnal Teknik Industri: Jurnal Keilmuan dan Aplikasi Teknik Industri, vol. 12, no. 1, pp. 9-16, May 2010.