Improving image quality in visual cryptography por Yan, Bin, Xiang, Yong, Hua, Guang

Available for University of the Philippines Diliman via SpringerLink. Click here to access
Also available remotely for University of the Philippines Diliman via SpringerLink. Click here to access thru EZproxy

Digital audio watermarking fundamentals, techniques and challenges por Xiang, Yong, Hua, Guang, Yan, Bin

Available for University of the Philippines System via SpringerLink. Click here to access
Also available remotely for University of the Philippines System via SpringerLink. Click here to access thru EZproxy