Rey, E, Lago-Penas, C, Lago-Ballesteros, J, Casais, L & Dellal, A. (2010). The effect of cumulative fatigue on activity profiles of professional soccer players during a congested fixture period. Biology of Sport, 27 (3), 181-185.

Rey, E., Lago-Penas, C., Lago-Ballesteros, J., Casais, L., & Dellal, A. (2010). The effect of cumulative fatigue on activity profiles of professional soccer players during a congested fixture period. Biology of Sport, 27(3), 181-185.

Rey, E., C. Lago-Penas, J. Lago-Ballesteros, L. Casais, and A. Dellal. "The Effect of Cumulative Fatigue on Activity Profiles of Professional Soccer Players During a Congested Fixture Period." Biology of Sport 27, no. 3 (2010): 181-185.

Rey, E., et al. "The Effect of Cumulative Fatigue on Activity Profiles of Professional Soccer Players During a Congested Fixture Period." Biology of Sport, vol. 27, no. 3, 2010, pp. 181-185.