Fleddermann, M., Heppe, H., & Zentgraf, K. (2019). Off-court generic perceptual-cognitive Training in elite volleyball athletes: Task-specific effects and levels of transfer. Frontiers in psychology, 10, Art.-ID 1599, [12 S.]. doi:10.3389/fpsyg.2019.01599

Fleddermann, Marie-Therese, Holger Heppe, and Karen Zentgraf. "Off-court Generic Perceptual-cognitive Training in Elite Volleyball Athletes: Task-specific Effects and Levels of Transfer." Frontiers in Psychology 10 (2019): Art.-ID 1599, [12 S.].

Fleddermann, Marie-Therese, Holger Heppe, and Karen Zentgraf. "Off-court Generic Perceptual-cognitive Training in Elite Volleyball Athletes: Task-specific Effects and Levels of Transfer." Frontiers in Psychology 10 (2019): Art.-ID 1599, [12 S.].