TY  - JOUR 
T1  - Influence of chronotype and social zeitgebers on sleep/wake patterns
JO  - Brazilian Journal of Medical and Biological Research
A1  - Korczak, A.L.
A1  - Martynhak, B.J.
A1  - Pedrazzoli, M.
A1  - Brito, A.F.
A1  - Louzada, F.M.
SN  - 0100-879X
UL  - 10.1590/S0100-879X2008005000047
VL  - 41 
Y1  - 2008
PB  - Brasil 
ER  -