Herrero, A. J., Martín, J., Martín, T., Fernández, B., & García-López, D. (2010). Short-term effect of plyometrics and strength training with and without superimposed electrical stimulation on muscle strength and anaerobic performance: A randomized controlled trial. Part II. Journal of strength and conditioning research, 24(6), S. 1616-1622. doi:10.1519/JSC.0b013e3181d8e84b

Herrero, Azael J., Juan Martín, Teresa Martín, Beatriz Fernández, and David García-López. "Short-term Effect of Plyometrics and Strength Training With and Without Superimposed Electrical Stimulation On Muscle Strength and Anaerobic Performance: A Randomized Controlled Trial. Part II." Journal of Strength and Conditioning Research 24, no. 6 (2010): S. 1616-1622.

Herrero, Azael J., et al. "Short-term Effect of Plyometrics and Strength Training With and Without Superimposed Electrical Stimulation On Muscle Strength and Anaerobic Performance: A Randomized Controlled Trial. Part II." Journal of Strength and Conditioning Research 24.6 (2010): S. 1616-1622.