@Article{MC-8-2, author = {}, title = {历史照片}, journal = {数学文化}, year = {2017}, volume = {8}, number = {2}, pages = {0--0}, abstract = {}, issn = {2617-8656}, doi = {https://doi.org/2017-MC-11976}, url = {https://global-sci.com/article/89558/%E5%8E%86%E5%8F%B2%E7%85%A7%E7%89%87} }