Falkenbach, A., Weber, E., Unkelbach, U., & Wendt, T. (1992). Effect of physical exercise on concentration capability during mental stress. Hungarian Review of Sports Medicine, 33(2), S. 91-95.

Falkenbach, A., E. Weber, U. Unkelbach, and T. Wendt. "Effect of Physical Exercise On Concentration Capability During Mental Stress." Hungarian Review of Sports Medicine 33, no. 2 (1992): S. 91-95.

Falkenbach, A., E. Weber, U. Unkelbach, and T. Wendt. "Effect of Physical Exercise On Concentration Capability During Mental Stress." Hungarian Review of Sports Medicine 33.2 (1992): S. 91-95.