1. Algèbre de Lie IV–VI;Bourbaki,1968
2. Finite dimensional representations of the group of unimodular matrices;Gel'fand;Dokl. Akad. Nauk. USSR,1977
3. Concrete Mathematics;Graham,1990
4. Quantum Groups and Their Primitive Ideals;Joseph,1995
5. Crystal base and Littelmann's refined Demazure character formula;Kashiwara;Duke Math. J.,1993