1. The role of innovation characteristics and perceived voluntariness in the acceptance of information technologies;Agarwal;Decision Sciences,1997
2. Anckar, B., Carlsson, C., & Walden, P. (2003). Factors affecting consumer adoption decisions and intents in Mobile Commerce: Empirical insights. Paper presented at the 16th Bled eConference: eTransformation, Bled, Slovenia, 09–11 June 2003. . Accessed 08.06.09.
3. Bach, T. (2008). DSL versus Kabel. Wiesbaden: Gabler.
4. Die Zukunft des deutschen Kabelfernsehnetzes;Beckert,2005
5. The predictive validity of multiple-item versus single-item measures of the same constructs;Bergkvist;Journal of Marketing Research,2007