<?xml version="1.0" encoding="utf-8"?><mads xmlns="http://www.loc.gov/mads/" xmlns:mods="http://www.loc.gov/mods/v3" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.loc.gov/mads/
mads.xsd"><authority><topic authority="http://AATesaurus.cultura.gencat.cat/aat/getty_en">magic squares</topic></authority><related type="broader"><topic>word and number puzzles and games</topic></related><variant type="other"><topic>magic square</topic></variant><variant type="other"><topic>squares, magic</topic></variant> <note xml:lang="en"><![CDATA[ Square arrays of integers arranged such that the sum of the integers in all rows, columns, and major diagonals add up to the same number; known for over 4000 years. ]]></note></mads>