TY  - JOUR 
T1  - Solid state 13C NMR analysis of Brazilian cretaceous ambers
JO  - Journal of the Brazilian Chemical Society
A1  - Pereira, Ricardo
A1  - San Gil, Rosane A. S.
A1  - Carvalho, Ismar S.
A1  - Fernandes, Antonio Carlos S.
A1  - Azevedo, Débora A.
SN  - 0103-5053
UL  - 10.1590/S0103-50532011000100012
VL  - 22 
Y1  - 2011
PB  - Brasil 
ER  -