@inproceedings{boxuanthe,
title={The Relation between Difference Equation and Differential Equation},
author={Boxuan Chen},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20160813215157052120130},
}
Boxuan Chen. The Relation between Difference Equation and Differential Equation. http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20160813215157052120130.