TY  - JOUR
AU  - Avner Ash
AU  - Lee Rudolph
TI  - The Modular Symbol and Continued Fractions in Higher Dimensions.
JO  - Inventiones mathematicae
PY  - 1979
SP  - 241
EP  - 250
VL  - 55
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/IM_1979__55_186135/
ID  - IM_1979__55_186135
ER  -