Kumar, Gulshan, Arun Sasidharan, Ajay Kumar Nair, and Bindu M. Kutty. “Efficacy of the Combination of Cognitive Training and Acoustic Stimulation in Eliciting Lucid Dreams During Undisturbed Sleep - a Pilot Study Using Polysomnography, Dream Reports and Questionnaires”. International Journal of Dream Research 11, no. 2 (November 1, 2018): 197–202. Accessed December 14, 2024. https://journals.ub.uni-heidelberg.de/index.php/IJoDR/article/view/46417.