Open Physics
Open Physics > 2011 > 9 > 3 > 662-673
Open Physics > 2011 > 9 > 4 > 898-908
Open Physics > 2012 > 10 > 4 > 779-788
Open Physics > 2011 > 9 > 3 > 662-673
Open Physics > 2011 > 9 > 4 > 898-908
Open Physics > 2012 > 10 > 4 > 779-788