M. I. Ramli, R. Patandungan, and S. A. Adisasmita, “Passengers’ Perceptions on Effectiveness of Public Facilities in Hasanuddin International Airport Terminal Based on Ordered Logit Model”, Int. J. Adv. Sci. Eng. Inf. Technol., vol. 8, no. 5, pp. 1991–1996, Oct. 2018.