TY  - JOUR 
T1  - Determination of catecholamines in pharmaceutical formulations using a biosensor modified with a crude extract of fungi laccase (Pleurotus ostreatus)
JO  - Journal of the Brazilian Chemical Society
A1  - Leite, Oldair D.
A1  - Fatibello-Filho, Orlando
A1  - Barbosa, Aneli de M.
SN  - 0103-5053
UL  - 10.1590/S0103-50532003000200018
VL  - 14 
Y1  - 2003
PB  - Brasil 
ER  -