TY  - JOUR 
T1  - Optimization of the production of ethyl esters by ultrasound assisted reaction of soybean oil and ethanol
JO  - Brazilian Journal of Chemical Engineering
A1  - Rodrigues, S.
A1  - Mazzone, L. C. A.
A1  - Santos, F. F. P.
A1  - Cruz, M. G. A.
A1  - Fernandes, F. A. N.
SN  - 0104-6632
UL  - 10.1590/S0104-66322009000200013
VL  - 26 
Y1  - 2009
PB  - Brasil 
ER  -