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"The gender gap in mathematics performance disappears if school competitions are held with a multiround rather than single-round format, U.S. researchers say."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.upi.com/Science_News/2013/02/26/Gender-gap-in-math-work-studied/UPI-14301361912330/?spt=hs&or=sn>