Sally Bailes

Brief and distinct empirical sleepiness and fatigue scales.

Rhonda Amsel, Marc Baltzan, C. Fichten, 2006, Journal of psychosomatic research.

Time Estimation in Good and Poor Sleepers

Catherine S. Fichten, Rhonda Amsel, C. Fichten, 2005, Journal of Behavioral Medicine.

Sleep Quality and Psychological Adjustment in Chronic Fatigue Syndrome

Catherine S. Fichten, Rhonda Amsel, Ronald Schondorf, 2011, Journal of Behavioral Medicine.