M. C. Velasco-Rey, M. I. Gutiérrez-López, M. Sánchez-Muñoz, A. Trujillo-Borrego, and L. Sánchez-Bonome, “Psychotic depression induced by Obstructive Sleep Apnoea Syndrome (OSAS): a case reported”, Actas Esp Psiquiatr, vol. 40, no. 1, pp. 43–45, Jan. 2012.