1. E.E. Varsaki, V. Fotopoulos and A. N. Skodras, «A discrete Gould transform data hiding scheme», Mathematical Methods in the Applied Sciences, vol. 37, no. 2, pp. 283-288, January 2014.
    DOI: 10.1002/mma.3041
  2. E.E. Varsaki, V. Fotopoulos and A. N. Skodras, «Data Hiding Based On Image Classification», Signal Image and Video Processing, Springer, vol. 7, no. 2, pp. 247-253, March 2013.
    DOI: 10.1007/s11760-011-0229-5
  3. E.E. Varsaki, V. Fotopoulos, A. N. Skodras, «A Discrete Gould Transform Data Hiding Scheme», Modern Mathematical Methods in Science and Technology (M3ST), August 26, 2012 – August 28, 2012, Kalamata, Greece.
  4. E.E. Varsaki, Vassilis Fotopoulos, Athanassios N. Skodras, «Pascal Transform Based Self-Authentication Of Color Images», International Conference on Systems, Signal and Image Processing (IWSSIP 2012), Vienna, Austria, 11-13 April 2012
  5. E.E. Varsaki, V. Fotopoulos, A.N. Skodras, «A Data Hiding Scheme Based on LBPROT Pattern», Hellenic Open University Journal Of Informatics (HOUJOI), Vol. 3, No. 1, 2011, pp.10-17 [pdf]
  6. E.E. Varsaki, N.A.B. Gizani, V. Fotopoulos, A.N. Skodras, «Alternative Astronomical FITS Imaging», 11th Asian-Pacific Regional IAU meeting (APRIM2011), Thailand, July 26-29, 2011 [pdf]
  7. E.E. Varsaki, V. Fotopoulos and A. N. Skodras, «On the use of discrete Pascal transform in hiding data in images», in Proc. SPIE Optics, Photonics, and Digital Technologies for Multimedia Applications. Edited by Peter Schelkens, Touradj Ebrahimi, Gabriel Cristóbal, Frédéric Truchetet, Pasi Saarikko, Volume 7723, Brussels, Belgium, April 12-16, 2010, pp. 77230L-77230L-11 (Best Student Paper Award) [presentation] [pdf]
    DOI: 10.1117/12.854220
  8. E.E. Varsaki, V. Fotopoulos and A.N. Skodras, «Self-Authentication of Natural Color Images in Pascal Transform Domain», in Proc. 16th Int. Conference on Digital Signal Processig (DSP 2009), Santorini, Greece, July 5-7, 2009 [pdf]
    DOI: 10.1109/ICDSP.2009.5201200
  9. E. Chrysochos, E.E. Varsaki, V. Fotopoulos and A.N. Skodras, «High Capacity Reversible Data Hiding using Overlapping Difference Expansion», in Proc. Int. Workshop on Image Analysis for Multimedia Interactive Services (WIAMIS 2009), London, UK, May 6-8, 2009
    DOI: 10.1109/WIAMIS.2009.5031447
  10. S.K. Kapotas, E.E. Varsaki and A.N. Skodras, «Data Hiding in H.264 Encoded Video Sequences», in Proc. IEEE Int. Workshop on Multimedia Signal Processing (MMSP 2007), Chania, Greece, Oct. 1-3, 2007
    DOI: 10.1109/MMSP.2007.4412894
  11. E. Varsaki, V. Fotopoulos, A.N. Skodras, «A reversible data hiding technique for embedding in the image histogram», Hellenic Open University Journal Of Informatics (HOUJOI), Vol.1, No.2, 2006-2007 [pdf]