TY - JOUR AU - E. G. F. Thomas TI - An Invariant Symmetric Non-Selfadjoint Differential Operator JO - Journal of Lie Theory PY - 2002 SP - 245 EP - 257 VL - 12 IS - 1 UR - https://jolt.centre-mersenne.org/articles/10.5802/jolt.260/ DO - 10.5802/jolt.260 ID - JOLT_2002_12_1_a11 ER -