t-analogs of q-characters of Kirillov-Reshetikhin modules of quantm   affine algebras
  We prove the Kirillov-Reshetikhin conjecture concerning certain finite dimensional representations of a quantum affine algebra $\Ua$ when $\hat\g$ is an untwisted affine Lie algebra of type $ADE$. We use $t$--analog of $q$--characters introduced by the author in an essential way. 
Hiraku Nakajima