TY  - JOUR 
T1  - Use of factorial design for optimization of microwave-assisted digestion of lubricating oil
JO  - Journal of the Brazilian Chemical Society
A1  - Costa, Letícia M.
A1  - Ferreira, Sérgio L. C.
A1  - Nogueira, Ana Rita A.
A1  - Nóbrega, Joaquim A.
SN  - 0103-5053
UL  - 10.1590/S0103-50532005000700027
VL  - 16 
Y1  - 2005
PB  - Brasil 
ER  -