Alternatives for Multimedia Messaging System Steganography. - Konstantinos Papapanagiotou; Emmanouel Kellinis; Giannis F. Marias; Panagiotis Georgiadis 001 (CIS (2), 2005)

Using Steganography to Improve Hash Functions' Collision Resistance. - Emmanouel Kellinis; Konstantinos Papapanagiotou (SECRYPT, 2007)