TY - BOOK AU - Helgason Sigurdur TI - Groups and geometric analysis: integral geometry, invariant differential operators, and spherical functions SN - 0-8218-2673-5 U1 - 510MS PY - 2000/// CY - Providence PB - AMS KW - Differential geometry KW - Lie groups N1 - same copy Acc. no. 105629 ER -