Micropayment schemes with ability to return changes. - Ching-Nung Yang; Chih-Cheng Wu; Chih-Yang Chiu; Shin-Yan Chiou; Wen-Chiuan Liao (iiWAS, 2009)

Enhancing Privacy and Security in RFID-Enabled Banknotes. - Ching-Nung Yang; Jie-Ru Chen; Chih-Yang Chiu; Gen-Chin Wu; Chih-Cheng Wu (ISPA, 2009)

Efficient Encoding/Decoding for Second-Order Spectral-Null Codes by Reducing Random Walks. - Ching-Nung Yang; Chih-Yang Chiu; Gen-Cheng Wu (IEEE Trans. Computers, 2011)