González-Víllora, S., L. M. García-López, D. Gutiérrez-Díaz, and J. C. Pastor-Vicedo. “Tactical Awareness, Decision Making and Skill in Youth Soccer Players (under-14 Years)”. Journal of Human Sport and Exercise, vol. 8, no. 2, July 2013, pp. 412-26, doi:10.4100/jhse.2012.82.09.