Duc Thanh Nguyen Cam Thi Nguyen Tham Luong Thi Thanh Loan Nguyen Thi Kim Loan Tran Thi An Application of Genetic Algorithm for Weekly Course Timetabling Problem. 455-462 2007 conf/icai/2007-2 IC-AI db/conf/icai/icai2007-2.html#NguyenNTTT07