Schredl, Michael, Louisa Holyba, Tina Köllmer, Jessica Körfer, and Annika Proß. 2019. “Nightmare Distress, Nightmare Frequency, and Beliefs about Nightmares”. International Journal of Dream Research 12 (2), 60-66. https://doi.org/10.11588/ijodr.2019.2.62531.