Witcha Burirak และ Damras Wongsawang. (2014) The design and implementation of the conditional access system for cable TV subscription suing fixed control word. Mahidol University:ม.ป.ท.Witcha Burirak และ Damras Wongsawang. 2014. The design and implementation of the conditional access system for cable TV subscription suing fixed control word. ม.ป.ท.:Mahidol University;Witcha Burirak และ Damras Wongsawang. The design and implementation of the conditional access system for cable TV subscription suing fixed control word. ม.ป.ท.:Mahidol University, 2014. Print.