TY  - JOUR 
T1  - 
JO  - Journal of the Brazilian Chemical Society
A1  - Andrade, Jailson B. de
SN  - 0103-5053
UL  - 10.1590/S0103-50532002000500001
VL  - 13 
Y1  - 2002
PB  - Brasil 
ER  -