Steganography in Compressed Video Stream. - Changyong Xu; Xijian Ping; Tao Zhang 031 (ICICIC (1), 2006)

Permanence for a delayed discrete three-level food-chain model with Beddington-DeAngelis functional response. - Changyong Xu; Meijuan Wang (Appl. Math. Comput., 2007)

Hindrances to the Development of Tourism E-Commerce in China. - Lixia Yang; Xun Liu; Changyong Xu (ISECS, 2008)