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 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/JLT_2002_12_1_JLT_2002_12_1_a11/ ID - JLT_2002_12_1_JLT_2002_12_1_a11 ER -