Sapiains R, Echeverría A. Youth group designs and violence: Soccer cheer groups and youth gangs. RevPsicología [Internet]. 1999 Jan. 1 [cited 2024 May 18];8(2):Pág. 53-55. Available from: https://revistaestudiosarabes.uchile.cl/index.php/RDP/article/view/17198