Tanongsak Gulyanon. (2000) Principle of compatibility and requirement analysis for timetable scheduling for Thai university. Mahidol University,:ม.ป.ท.Tanongsak Gulyanon. 2000. Principle of compatibility and requirement analysis for timetable scheduling for Thai university. ม.ป.ท.:Mahidol University,;Tanongsak Gulyanon. Principle of compatibility and requirement analysis for timetable scheduling for Thai university. ม.ป.ท.:Mahidol University, 2000. Print.