This paper presents the twofold magic square with a apparent characteristic.It can be changed into a series of new magic squares through changing the submatrix.
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章长才.双重幻方的可变性[J].土木与环境工程学报(中英文),1993,15(3). Zhang Changcai Dept. of Science Natural. THE CHANGEABILITY OF 2~m ORDER TWOFOLD[J]. JOURNAL OF CIVIL AND ENVIRONMENTAL ENGINEERING,1993,15(3).10.11835/j. issn.1674-4764.1993.03.008