Open Physics
Open Physics > 2008 > 6 > 1 > 141-152
Open Physics > 2008 > 6 > 3 > 717-729
Open Physics > 2008 > 6 > 4 > 884-890
Open Physics > 2008 > 6 > 1 > 141-152
Open Physics > 2008 > 6 > 3 > 717-729
Open Physics > 2008 > 6 > 4 > 884-890