TY  - JOUR 
T1  - Analogue of the theorem of Birkhoff in a metric nonsymmetric theory of the gravitational-electromagnetic field
JO  - Brazilian Journal of Physics
A1  - Ragusa, S.
A1  - Bosquetti, D.
SN  - 0103-9733
UL  - 10.1590/S0103-97332007000300015
VL  - 37 
Y1  - 2007
PB  - Brasil 
ER  -