A Theoretical Framework for Data-Hiding in Digital and Printed Text Documents. - Renato Villán; Sviatoslav Voloshynovskiy; Frédéric Deguillaume; Yuriy B. Rytsar; Oleksiy J. Koval; Emre Topak; E. Rivera; Thierry Pun (Communications and Multimedia Security, 2005)

Multilevel 2D bar codes: toward high-capacity storage modules for multimedia security and management. - Renato Villán; Sviatoslav Voloshynovskiy; Oleksiy J. Koval; Thierry Pun (Security, Steganography, and Watermarking of Multimedia Contents, 2005)

Text data-hiding for digital and printed documents: theoretical and practical considerations. - Renato Villán; Sviatoslav Voloshynovskiy; Oleksiy J. Koval; José-Emilio Vila-Forcén; Emre Topak; Frédéric Deguillaume; Yuriy B. Rytsar; Thierry Pun (Security, Steganography, and Watermarking of Multimedia Contents, 2006)

Information-theoretic analysis of electronic and printed document authentication. - Sviatoslav Voloshynovskiy; Oleksiy J. Koval; Renato Villán; Emre Topak; José-Emilio Vila-Forcén; Frédéric Deguillaume; Yuriy B. Rytsar; Thierry Pun (Security, Steganography, and Watermarking of Multimedia Contents, 2006)

Multilevel 2-D Bar Codes: Toward High-Capacity Storage Modules for Multimedia Security and Management. - Renato Villán; Sviatoslav Voloshynovskiy; Oleksiy J. Koval; Thierry Pun (IEEE Trans. Inf. Forensics Secur., 2006)

Tamper-proofing of electronic and printed text documents via robust hashing and data-hiding. - Renato Villán; Sviatoslav Voloshynovskiy; Oleksiy J. Koval; Frédéric Deguillaume; Thierry Pun (Security, Steganography, and Watermarking of Multimedia Contents, 2007)

Document forensics based on steganographic anti-counterfeiting markings and mobile architectures. - Fokko Beekhof; Sviatoslav Voloshynovskiy; Oleksiy J. Koval; Renato Villán; Emre Topak (e-Forensics, 2008)

Secure surface identification codes. - Fokko Beekhof; Sviatoslav Voloshynovskiy; Oleksiy J. Koval; Renato Villán; Thierry Pun (Security, Forensics, Steganography, and Watermarking of Multimedia Contents, 2008)

Error exponent analysis of person identification based on fusion of dependent/independent modalities: multiple hypothesis testing case. - Oleksiy J. Koval; Sviatoslav Voloshynovskiy; Renato Villán; Thierry Pun (Security, Forensics, Steganography, and Watermarking of Multimedia Contents, 2008)

Authentication of biometric identification documents via mobile devices. - Sviatoslav Voloshynovskiy; Oleksiy J. Koval; Renato Villán; Fokko Beekhof; Thierry Pun (J. Electronic Imaging, 2008)