Infrigements of the laws of the game and youth soccer categories: A descriptive study - Zafra, A. O.; Ortega, E.; Ato, M.; Lozano, F. J.; de los Fayos, E. G.; Ortin, F. J. (Journal of Human Sport & Exercise, 2010)
Keywords: soccer; junior elite sport; youth; law; Spain; social sciences; sport games; junior sports