The link between vitamin D metabolism and sleep medicine.
D.E. McCarty, A.L. Chesson Jr., S.K. Jain & A.A. MARINO. Sleep Med. Rev.18:311–319, 2014. [PDF]

Vitamin D deficiency, sleep, sleep disruption, and daytime neurocognitive impairment.
D.E. McCarty & A.A. MARINO. In Handbook of Nutrition, Diet and Sleep. V.R. Preedy, V.B. Patel & L.-A. Le, eds. Wageningen Academic Publishers, The Netherlands, 353–368, 2013. [PDF]

Vitamin D, race, and excessive daytime sleepiness.
D.E. McCarty, A. Reddy, Q. Kiegley, P.Y. Kim & A.A. MARINO. J. Clin. Sleep Med. 8:693–697, 2012. [PDF]