Sleep lenght, sleepiness and reaction time of working college students, males and females, during working days and free days - Fischer, Frida Marina; Manelli, R Nagai; Moreno, Claudia Roberta de Castro; Teixeira, L; Conceicao, A B; Mussi, M. H; Luz, A A; Lowden, A (Conference of the International Society for Chronobiology, 2010)