TY - JOUR AU - C. Stroppel TI - Homomorphisms and Extensions of Principal Series Representations JO - Journal of Lie theory PY - 2003 SP - 193 EP - 212 VL - 13 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/JLT_2003_13_1_JLT_2003_13_1_a11/ ID - JLT_2003_13_1_JLT_2003_13_1_a11 ER -