Brodowicz, G., Welsh, R., & Wallis, J. (1996). Comparison of stretching with ice, stretching with heat, or stretching alone on hamstring flexibility. Journal of athletic training, 31(4), S. 324-327. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1318916/pdf/jathtrain00020-0038.pdf

Brodowicz, G.R., R. Welsh, and J. Wallis. "Comparison of Stretching With Ice, Stretching With Heat, or Stretching Alone On Hamstring Flexibility." Journal of Athletic Training 31, no. 4 (1996): S. 324-327.

Brodowicz, G.R., R. Welsh, and J. Wallis. "Comparison of Stretching With Ice, Stretching With Heat, or Stretching Alone On Hamstring Flexibility." Journal of Athletic Training 31.4 (1996): S. 324-327.