@Article{MC-13-1, author = {}, title = {封三}, journal = {数学文化}, year = {2022}, volume = {13}, number = {1}, pages = {0--0}, abstract = {}, issn = {2617-8656}, doi = {https://doi.org/2022-MC-20343}, url = {https://global-sci.com/article/89160/%E5%B0%81%E4%B8%89} }