Erlacher, Daniel, Michael Schredl, Tsuneo Watanabe, Jun Yamana, and Florian Gantzert. “The Incidence of Lucid Dreaming Within a Japanese University Student Sample”. International Journal of Dream Research 1, no. 2 (October 1, 2008): 39–43. Accessed October 15, 2024. https://journals.ub.uni-heidelberg.de/index.php/IJoDR/article/view/79.