Junker, Irini, Julia Bergel, Elena Deresko, Susanne Freund, and Michael Schredl. “Sleep Positions of Couples at Sleep Onset: A Questionnaire Study”. International Journal of Dream Research 9, no. 2 (October 24, 2016): 137–141. Accessed April 20, 2024. https://journals.ub.uni-heidelberg.de/index.php/IJoDR/article/view/32590.