@Article{CMSN-1-0,
author = {},
title = {封二},
journal = {中国数学会通讯},
year = {2020},
volume = {1},
number = {1},
pages = {0--0},
abstract = {},
issn = {},
doi = {https://doi.org/},
url = {http://global-sci.org/intro/article_detail/cmsn/18450.html}
}