@Article{MC-10-2, author = {}, title = {封三}, journal = {数学文化}, year = {2019}, volume = {10}, number = {2}, pages = {0--0}, abstract = {}, issn = {2617-8656}, doi = {https://doi.org/2019-MC-13184}, url = {https://global-sci.com/article/89402/%E5%B0%81%E4%B8%89} }