Wagner, Ralf. The Dark Side of Marketing Communication: Grouping Consumers with Respect to Their Reactance Behavior. 36th Annual Conference of the German Classification Society (GfKl) in Hildesheim, Year 2012.
Zulauf, Katrin and Wagner, Ralf. Power Shift Paradox in Retailer-Manufacturer Negotiations: How to Take Advantage of the Channel Power Shift?. Proceedings of the 41st EMAC Conference, Marketing to Citizens: Going beyond Customers and Consumers. Lissabon, Year 2012.