@inproceedings{geir1997irreducibility,
title={Irreducibility of the punctual quotient scheme of a surface},
author={Geir Ellingsrud, and Manfred Lehn},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203555835605723},
booktitle={Arkiv for Matematik},
volume={37},
number={2},
pages={245-254},
year={1997},
}
Geir Ellingsrud, and Manfred Lehn. Irreducibility of the punctual quotient scheme of a surface. 1997. Vol. 37. In Arkiv for Matematik. pp.245-254. http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203555835605723.