Requirements and Architecture for a Group Memory in the Any-Time/Any-Place Domain of Computer Supported Cooperative Work. - William Hafner (1999)

Computer and Internet Use on Campus: A Legal Guide to Issues of Intellectual Property, Free Speech, and Privacy: Hawke, Constance S. (2001). San Francisco, CA: Jossey-Bass, Inc., 172 pages. ISBN: 0-7879-5516-7. US$17.00. - William Hafner (Internet High. Educ., 2001)

Engineering an online course: applying the 'secrets' of computer programming to course development. - Timothy J. Ellis; William Hafner (Br. J. Educ. Technol., 2003)

The User's View of the Internet: Bruce, H. (2002). Lanham, MD: Scarecrow Press, 228 pages, ISBN: 0-8108-4366-6 (paper), US$29.95. - William Hafner (Internet High. Educ., 2003)

eCAD: A Knowledge-Based Course Engineering System. - Timothy J. Ellis; William Hafner; Frank Mitropoulos (HICSS, 2004)

Project-Based, Asynchronous Collaborative Learning. - William Hafner; Timothy J. Ellis (HICSS, 2004)

Peer Evaluations of Collaborative Learning Experiences Conveyed Through an Asynchronous Learning Network. - Timothy J. Ellis; William Hafner (HICSS, 2005)

ACLE: A Communication Environment for Asynchronous Collaborative Learning. - Timothy J. Ellis; William Hafner (HICSS, 2006)

An Agent Based, Application-Layer Security Framework. - Hicham Tout; William Hafner (SWWS, 2006)

Control Structure in Project-Based Asynchronous Collaborative Learning. - Timothy J. Ellis; William Hafner (HICSS, 2007)

Phishpin: An Identity-Based Anti-phishing Approach. - Hicham Tout; William Hafner (CSE (3), 2009)

Phishpin: An Integrated Anti-Phishing Framework. - Hicham Tout; William Hafner; Wei Li 025; Easwar A. Nyshadham (Security and Management, 2009)

Uncertainty reasoning for service-based situational awareness information on the Semantic Web. - Stephen C. Dinkel; William Hafner; Paulo C. G. Costa; Sumitra Mukherjee (CogSIMA, 2011)

The Effect of Information Quality on Trust in E-Government Systems. - Ally Lee; Yair Levy; William Hafner (AMCIS, 2012)

Service-based situational awareness on the Semantic Web. - Stephen C. Dinkel; William Hafner; Paulo C. G. Costa; Sumitra Mukherjee (CogSIMA, 2013)

Error Occurrence: Successful versus Unsuccessful Unlearning in Individuals. - Julee H. Hafner; Timothy J. Ellis; William Hafner (HICSS, 2014)