Núñez, J.P. and Vicente, F. de (2004) “Unconscious Learning. Conditioning to Subliminal Visual Stimuli”., The Spanish Journal of Psychology, 7(1), pp. 13–28. Available at: https://revistas.ucm.es/index.php/SJOP/article/view/SJOP0404120013A (Accessed: 23 July 2026).