Measuring similarity between color image regions. - Mahmut Akcay; Atilla Baskurt; Bülent Sankur (EUSIPCO, 2002)

Comparative evaluation of semifragile watermarking algorithms. - Özgür Ekici; Bülent Sankur; Baris Coskun; Umut Naci; Mahmut Akcay (J. Electronic Imaging, 2004)