@inproceedings{dan2010dirac,
title={Dirac cohomology for graded affine Hecke algebras},
author={Dan Barbasch, Dan Ciubotaru, and Peter E. Trapa},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203359595300761},
booktitle={Acta Mathematica},
volume={209},
number={2},
pages={197-227},
year={2010},
}

Dan Barbasch, Dan Ciubotaru, and Peter E. Trapa. Dirac cohomology for graded affine Hecke algebras. 2010. Vol. 209. In Acta Mathematica. pp.197-227. http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203359595300761.