Mathematical intelligencer. 2007;29(3):55-59. doi: 10.1007/bf02985691 Q40.42025
Pit your wits against young minds!
DOI: 10.1007/bf02985691
摘要 查看摘要
Mathematical intelligencer. 2007;29(3):55-59. doi: 10.1007/bf02985691 Q40.42025
DOI: 10.1007/bf02985691
摘要 查看摘要