TY  - JOUR 
T1  - NMR and FTIR characterization of petroleum residues: structural parameters and correlations
JO  - Journal of the Brazilian Chemical Society
A1  - Castro, Alexandre T.
SN  - 0103-5053
UL  - 10.1590/S0103-50532006000600016
VL  - 17 
Y1  - 2006
PB  - Brasil 
ER  -