Llorens Sellés, Pedro. “The Third Social Sector: Citizen Science in the Field of Disappearances in Spain”. Logos Guardia Civil, Scientific Magazine of the University Center of the Guardia Civil 4, no. 1 (January 30, 2026): 171–192. Accessed September 28, 2026. https://revistacugc.es/article/view/8461.