Open Physics
Open Physics > 2008 > 6 > 4 > 802-807
Open Physics > 2009 > 7 > 4 > 753-761
Open Physics > 2010 > 8 > 4 > 628-633
Open Physics > 2012 > 10 > 1 > 197-205
Open Physics > 2014 > 12 > 9 > 611-614
Open Physics > 2008 > 6 > 4 > 802-807
Open Physics > 2009 > 7 > 4 > 753-761
Open Physics > 2010 > 8 > 4 > 628-633
Open Physics > 2012 > 10 > 1 > 197-205
Open Physics > 2014 > 12 > 9 > 611-614