G. Calvo, Manuel, y M. Dolores Castillo. «Processing of Threat-Related Information Outside the Focus of Visual Attention». The Spanish Journal of Psychology 8, no. 1 (abril 21, 2005): 3–11. Accedido diciembre 5, 2025. https://revistas.ucm.es/index.php/SJOP/article/view/SJOP0505120003A.