Authors: Kelly, TL Neri, DF Grill, JT Ryman, D Hunt, PD Dijk, DJ Shanahan, TL Czeisler, CA

Citation: Tl. Kelly et al., Nonentrained circadian rhythms of melatonin in submariners scheduled to an18-hour day, J BIOL RHYT, 14(3), 1999, pp. 190-196