The Permanente Journal 2019 Study:  Cannabidiol in Anxiety and Sleep: A Large Case Series

American Sleep Association 2019 Article:  CBD: FOR SLEEP AND INSOMNIA

NCBI 2017 Abstract:  Cannabis, Cannabinoids, and Sleep: a Review of the Literature.

The Sleep Doctor 2017 Article:  Understanding CBD: The calming and sleep promoting benefits of cannabidiol

NCBI 2014 Study:  Endocannabinoid modulation of cortical up-states and NREM sleep.

NCBI 2006 Study: Cannabidiol, a constituent of Cannabis sativa, modulates sleep in rats.