G. Schryen, “An e-mail honeypot addressing spammers’ behavior in collecting and applying addresses,” in Proceedings of the 6th IEEE Information Assurance Workshop, 2005, pp. 37–41.

G. Schryen, “Effektivität von Lösungsansätzen zur Bekämpfung von Spam,” Wirtschaftsinformatik, vol. 46, no. 4, pp. 281–288, 2004.

G. Schryen, “Fighting Spam: Motivating an Account-based Approach,” in Proceedings of the IADIS International Conference WWW/Internet 2004. vol. 2, 2004, pp. 937–940.

G. Schryen, “E-Democracy: Internet Voting,” in Proceedings of the IADIS International Conference WWW Internet 2003. vol. 2, Algarve: IADIS Press, 2003, pp. 1017–1021.

G. Schryen, “Internet-Wahlen,” in 6. Internationale Tagung Wirtschaftsinformatik, 2003, pp. 937–956.

G. Schryen and J. Karla, “Elektronisches Papier - Display-Technologie mit weitem Anwendungsspektrum,” Wirtschaftsinformatik, vol. 44, no. 6, pp. 567–574, 2002.