van Schagen, Annette M, Jaap Lancee, Victor I Spoormaker, and Jan van den Bout. 2016. “Long-Term Treatment Effects of Imagery Rehearsal Therapy for Nightmares in a Population With Diverse Psychiatric Disorders”. International Journal of Dream Research 9 (1):67-70. https://doi.org/10.11588/ijodr.2016.1.24953.