Jacobs, C. A., Uhl, T. L., Mattacola, C. G., Shapiro, R., & Rayens, W. S. (2007). Hip abductor function and lower extremity landing kinematics: Sex differences. Journal of athletic training, 42(1), S. 76-83. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1896084/

Jacobs, Cale A., Timothy L. Uhl, Carl G. Mattacola, Robert Shapiro, and William S. Rayens. "Hip Abductor Function and Lower Extremity Landing Kinematics: Sex Differences." Journal of Athletic Training 42, no. 1 (2007): S. 76-83.

Jacobs, Cale A., et al. "Hip Abductor Function and Lower Extremity Landing Kinematics: Sex Differences." Journal of Athletic Training 42.1 (2007): S. 76-83.