TY  - JOUR 
T1  - Trans,trans-muconic acid in urine samples collected in three periods from benzene handling workers in a Brazilian refinery
JO  - Revista Brasileira de Ciências Farmacêuticas
A1  - Martins, Isarita
A1  - Siqueira, Maria Elisa Pereira Bastos de
SN  - 1516-9332
UL  - 10.1590/S1516-93322004000200008
VL  - 40 
Y1  - 2004
PB  - Brasil 
ER  -