José M. Cancela, Carlos Ayán, and Silvia Varela. “‘Symbol Digit Modalities Test’ Normative Values for Spanish Home Care Residents: A Pilot Study”. Actas Españolas de Psiquiatría 40, no. 6 (November 1, 2012): 299–303. Accessed September 9, 2024. https://actaspsiquiatria.es/index.php/actas/article/view/513.