Hárdi, L., P. Pérez-Sales, B. Morentin, O. Barrenetxea, and M. A. Navarro-Lashayas. “Incommunicado Detention and Torture in Spain, Part II: Enhanced Credibility Assessment Based on the Istanbul Protocol”. Torture Journal, vol. 26, no. 3, Sept. 2018, p. 13, doi:10.7146/torture.v26i3.109330.