TY  - BOOK
AU  - Helgason,S
TI  - Groups & geometric analysis: integral geometry, invariant differential operators & spherical functions
T2  - Pure & applied mathematics 113
SN  - 0123383013
U1  - 8.05+9.02 
PY  - 1984///
CY  - Orlando
PB  - Academic Press
ER  -