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Open Physics > 2012 > 10 > 4 > 926-935
Open Physics > 2012 > 10 > 4 > 926-935
Open Physics > 2011 > 9 > 4 > 1002-1009
Open Physics > 2011 > 9 > 4 > 1002-1009
Open Physics > 2012 > 10 > 4 > 926-935
Open Physics > 2012 > 10 > 4 > 926-935
Open Physics > 2011 > 9 > 4 > 1002-1009
Open Physics > 2011 > 9 > 4 > 1002-1009