TY  - JOUR 
T1  - On some classical and quantum effects due to gravitational fields
JO  - Brazilian Journal of Physics
A1  - Bezerra, V. B.
SN  - 0103-9733
UL  - 10.1590/S0103-97332006000200006
VL  - 36 
Y1  - 2006
PB  - Brasil 
ER  -