Vílchez M. P., and J. M. Molina. “Participation Trends of Children in Regional Cross-Country Final During Three Seasons”. SPORT TK-EuroAmerican Journal of Sport Sciences 3, no. 1-2 (November 1, 2014): 41–46. Accessed September 29, 2026. https://revistas.um.es/sportk/article/view/222001.