TY  - JOUR
AU  - N. Abe
TI  - First extension groups of Verma modules and R-polynomials
JO  - Journal of Lie theory
PY  - 2015
SP  - 377
EP  - 393
VL  - 25
IS  - 2
UR  - http://geodesic.mathdoc.fr/item/JLT_2015_25_2_JLT_2015_25_2_a3/
ID  - JLT_2015_25_2_JLT_2015_25_2_a3
ER  -