Velasco-Rey, María C., et al. “Psychotic Depression Induced by Obstructive Sleep Apnoea Syndrome (OSAS): A Case Reported”. Actas Españolas De Psiquiatría, vol. 40, no. 1, Jan. 2012, pp. 43-45, https://actaspsiquiatria.es/index.php/actas/article/view/559.