Mathematical intelligencer. 1989;11(4):48-49. doi: 10.1007/bf03025886 Q40.42025
Mathematical entertainments
数学娱乐
DOI: 10.1007/bf03025886
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Mathematical intelligencer. 1989;11(4):48-49. doi: 10.1007/bf03025886 Q40.42025
DOI: 10.1007/bf03025886
摘要 查看摘要