@data{10.12072/SDZRAW.002.2017.db,
title = {Monthly Average Value of Sulfur Dioxide at Beijing Shangdianzi Atmospheric Background Station from 2004 to 2005},
author = {Quan Weijun and Zhang Xiaochun},
url = {http://www.ncdc.ac.cn/portal/metadata/bfcb94af-30ea-49bb-9a62-12591a1edbc6},
cstr = {11738.11.ncdc.SDZRAW.2020.18},
doi = {10.12072/SDZRAW.002.2017.db},
journal = {National Cryosphere Desert Data Center},
publisher = {National Cryosphere Desert Data Center(www.ncdc.ac.cn)}
}