TY  - JOUR 
T1  - Exclusive processes in diffraction at HERA
JO  - Brazilian Journal of Physics
A1  - Polini, A.
SN  - 0103-9733
UL  - 10.1590/S0103-97332007000500036
VL  - 37 
Y1  - 2007
PB  - Brasil 
ER  -