TY  - JOUR 
T1  - On the Faddeev-Popov operator eigenspectrum in topological background fields
JO  - Brazilian Journal of Physics
A1  - Maas, Axel
SN  - 0103-9733
UL  - 10.1590/S0103-97332007000400007
VL  - 37 
Y1  - 2007
PB  - Brasil 
ER  -