Nyland, J., Caborn, D., Shapiro, R., & Johnson, D. (1999). Crossover cutting during hamstring fatigue produces transverse plane knee control deficits. Journal of athletic training, 34(2), S. 137-143. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1322902/pdf/jathtrain00006-0065.pdf

Nyland, J.A., D.N.M Caborn, R. Shapiro, and D.L Johnson. "Crossover Cutting During Hamstring Fatigue Produces Transverse Plane Knee Control Deficits." Journal of Athletic Training 34, no. 2 (1999): S. 137-143.

Nyland, J.A., D.N.M Caborn, R. Shapiro, and D.L Johnson. "Crossover Cutting During Hamstring Fatigue Produces Transverse Plane Knee Control Deficits." Journal of Athletic Training 34.2 (1999): S. 137-143.