Open Physics
Open Physics > 2008 > 6 > 3 > 704-710
Open Physics > 2008 > 6 > 4 > 802-807
Open Physics > 2012 > 10 > 1 > 197-205
Open Physics > 2008 > 6 > 3 > 704-710
Open Physics > 2008 > 6 > 4 > 802-807
Open Physics > 2012 > 10 > 1 > 197-205