Building and Evaluating Non-Obvious User Profiles for Visitors of Web Sites. - Naveed Mushtaq; Peter Werner; Karsten Tolle; Roberto V. Zicari (CEC, 2004)

Introducing Zones to a Web Site: A Test Based Evaluation on Semantics, Content, and Business Goals. - Natascha Hoebel; Naveed Mushtaq; Clemens Schefels; Karsten Tolle; Roberto V. Zicari (CEC, 2009)