TY  - JOUR 
T1  - Beam transport in a quadrupole electrostatic system
JO  - Brazilian Journal of Physics
A1  - Barroso, J. J.
A1  - Terra, M. O.
SN  - 0103-9733
UL  - 10.1590/S0103-97332004000800017
VL  - 34 
Y1  - 2004
PB  - Brasil 
ER  -