TY  - DATA
AU  - Hejhal, Dennis A.
TI  - Regular b-groups, degenerating Riemann surfaces, and spectral theory 
T2  - Memoirs of the American Mathematical Society, 
SN  - 9781470408602 (online)
PY  - 1990///
CY  - Providence, R.I., USA
PB  - American Mathematical Society
UR  - http://www.ams.org/memo/0437
ER  -