Wicker, P., Breuer, C., & Hennigs, B. (2012). Understanding the interactions among revenue categories using elasticity measures: Evidence from a longitudinal sample of non-profit sport clubs in Germany. Sport management review, 15(3), S. 318-329. doi:10.1016/j.smr.2011.12.004

Wicker, Pamela, Christoph Breuer, and Ben Hennigs. "Understanding the Interactions Among Revenue Categories Using Elasticity Measures: Evidence From a Longitudinal Sample of Non-profit Sport Clubs in Germany." Sport Management Review 15, no. 3 (2012): S. 318-329.

Wicker, Pamela, Christoph Breuer, and Ben Hennigs. "Understanding the Interactions Among Revenue Categories Using Elasticity Measures: Evidence From a Longitudinal Sample of Non-profit Sport Clubs in Germany." Sport Management Review 15.3 (2012): S. 318-329.