TY  - JOUR 
T1  - Evolution of circadian organization in vertebrates
JO  - Brazilian Journal of Medical and Biological Research
A1  - Menaker, M.
A1  - Moreira, L.F.
A1  - Tosini, G.
SN  - 0100-879X
UL  - 10.1590/S0100-879X1997000300003
VL  - 30 
Y1  - 1997
PB  - Brasil 
ER  -