@inproceedings{alexandre1998schubert,
title={Schubert filtration for simple quotients of generalized Verma modules},
author={Alexandre Khomenko, and Volodymyr Mazorchuk},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203559701253753},
booktitle={Arkiv for Matematik},
volume={38},
number={2},
pages={319-326},
year={1998},
}
Alexandre Khomenko, and Volodymyr Mazorchuk. Schubert filtration for simple quotients of generalized Verma modules. 1998. Vol. 38. In Arkiv for Matematik. pp.319-326. http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203559701253753.