Johansson, F. R., Skillgate, E., Lapauw, M. L., Clijmans, D., Deneulin, V. P., Palmans, T., & Cools, A. M. (2015). Measuring eccentric strength of the shoulder external rotators using a handheld dynamometer: Reliability and validity. Journal of athletic training, 50(7), S. 719-725. doi:http://dx.doi.org/10.4085/1062-6050-49.3.72

Johansson, Fredrik R., Eva Skillgate, Mattis L. Lapauw, Dorien Clijmans, Valentijn P. Deneulin, Tanneke Palmans, and Ann M. Cools. "Measuring Eccentric Strength of the Shoulder External Rotators Using a Handheld Dynamometer: Reliability and Validity." Journal of Athletic Training 50, no. 7 (2015): S. 719-725.

Johansson, Fredrik R., et al. "Measuring Eccentric Strength of the Shoulder External Rotators Using a Handheld Dynamometer: Reliability and Validity." Journal of Athletic Training 50.7 (2015): S. 719-725.