TY  - JOUR 
T1  - Reduction of pollutants emissions on SI engines: accomplishments with efficiency increase
JO  - Journal of the Brazilian Society of Mechanical Sciences and Engineering
A1  - Vianna, J. N. de S.
A1  - Reis, A. do V.
A1  - Oliveira, A. B. de S.
A1  - Fraga, A. G.
A1  - Sousa, M. T. de
SN  - 1678-5878
UL  - 10.1590/S1678-58782005000300002
VL  - 27 
Y1  - 2005
PB  - Brasil 
ER  -