@article {2046,
	title = {A Model to Optimize University Course Timetable Using Graph Coloring and Integer Linear Programming},
	journal = {IOSR Journal of Mathematics (IOSR-JM)},
	volume = {12},
	year = {2016},
	pages = {13-18},
	url = {http://www.iosrjournals.org/iosr-jm/pages/v12(5)Version-3.html},
	author = {M.T.M. Perera and Lanel, GHJ}
}
