TY  - JOUR 
T1  - 
       
JO  - Journal of the Brazilian Chemical Society
A1  - Loh, Watson
A1  - Vargas, Maria D.
SN  - 0103-5053
UL  - 10.1590/S0103-50532001000400001
VL  - 12 
Y1  - 2001
PB  - Brasil 
ER  -