TY  - JOUR 
T1  - Ab initio calculation of the dynamical properties of PPP and PPV
JO  - Brazilian Journal of Physics
A1  - Sousa, R. L. de
A1  - Alves, H. W. Leite
SN  - 0103-9733
UL  - 10.1590/S0103-97332006000300072
VL  - 36 
Y1  - 2006
PB  - Brasil 
ER  -