@bookSchryen_2007, title=Preventing E-mail Spam: The Conceptualization and the Analysis of an Infrastructure Framework, author=Schryen, Guido, year=2007 

@articleSchryen_2007, title=Do anti-spam measures effectively cover the e-mail communication network? A formal approach, volume=3, number=2, journal=The Journal of Information Systems Security (AIS Special Interest Group in Security), author=Schryen, Guido, year=2007, pages=66–90 

@articleSchryen_2007, title=The Impact that Placing Email Addresses on the Internet has on the Receipt of Spamf? An Empirical Analysis, volume=2, number=5, journal=Computers &; Security, publisher=Elsevier, author=Schryen, Guido, year=2007, pages=361–372 

@inproceedingsSchryen_2005, title=An e-mail honeypot addressing spammers’ behavior in collecting and applying addresses, booktitle=Proceedings of the 6th IEEE Information Assurance Workshop, publisher=Westpoint, author=Schryen, Guido, year=2005, pages=37–41 

@articleSchryen_2004, title=Effektivität von Lösungsansätzen zur Bekämpfung von Spam, volume=46, number=4, journal=Wirtschaftsinformatik, publisher=Springer, author=Schryen, Guido, year=2004, pages=281–288 

@inproceedingsSchryen_2004, place=Madrid, title=Fighting Spam: Motivating an Account-based Approach, booktitle=Proceedings of the IADIS International Conference WWW/Internet 2004. vol. 2, publisher=IADIS Press, author=Schryen, Guido, editor=Isaias, PedroEditor, year=2004, pages=937–940