1. An evaluation of hypothetical attacks against the passwindow authentication method. http://passwindow.com/evaluation_of_hypothetical_attacks_against_passwindow.pdf. An evaluation of hypothetical attacks against the passwindow authentication method. http://passwindow.com/evaluation_of_hypothetical_attacks_against_passwindow.pdf.
2. Minicard. https://github.com/liffiton/minicard. Minicard. https://github.com/liffiton/minicard.
3. Minisat+. http://minisat.se/MiniSat+.html. Minisat+. http://minisat.se/MiniSat+.html.
4. Passwindow. http://www.passwindow.com. Passwindow. http://www.passwindow.com.
5. Steganography and Visual Cryptography in Computer Forensics