TY  - JOUR
AU  - Isaac Efrat
TI  - Spectral deformations of automorphic functions over graphs of groups.
JO  - Inventiones mathematicae
PY  - 1990
SP  - 447
EP  - 462
VL  - 102
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/IM_1990__102_2_143842/
ID  - IM_1990__102_2_143842
ER  -