Ubago-Jiménez, José Luis, Pilar Puertas-Molero, Gabriel González-Valero, and Federico Báez-Mirón. 2018. “Influence of the Practice of Physical Activity on schoolchildren’s Aggressiveness-Harassment”. Journal of Human Sport and Exercise 13 (2proc):S484-S494. https://doi.org/10.14198/jhse.2018.13.Proc2.32.