D. Settasuwacha, J. Pochan, and W. Wichitphongsa, “THE RISK ASSESSMENT OF ACCIDENT AT HIGHWAY-RAILWAY GRADE CROSSING (HRGC): A CASE STUDY OF KHLONG NGAE-KHUAN NIANG TRAIN STATION, SONGKHLA PROVINCE”, Life Sci. Environ. J., vol. 19, no. 1, pp. 99–110, Apr. 2018.