Perfect Crystals for U_q(D_4^{(3)})
  A perfect crystal of any level is constructed for the Kirillov-Reshetikhin module of $U_q(D_4^{(3)})$ corresponding to the middle vertex of the Dynkin diagram. The actions of Kashiwara operators are given explicitly. It is also shown that this family of perfect crystals is coherent. A uniqueness problem solved in this paper can be applied to other quantum affine algebras. 
Masaki Kashiwara, Kailash C. Misra, Masato Okado, Daisuke Yamada