M. Mazlan, M. Makhtar, A. Firdaus Khair Ahmad Khairi, M. Afendee Mohamed, and M. Nordin Abdul Rahman, “A study on optimization methods for solving course timetabling problem in university”, IJET, vol. 7, no. 2.14, pp. 196–200, Apr. 2018, doi: 10.14419/ijet.v7i2.14.12824.