Open Physics
Open Physics > 2005 > 3 > 2 > 209-220
Open Physics > 2006 > 4 > 2 > 187-195
Open Physics > 2009 > 7 > 2 > 310-314
Open Physics > 2012 > 10 > 2 > 478-484
Open Physics > 2005 > 3 > 2 > 209-220
Open Physics > 2006 > 4 > 2 > 187-195
Open Physics > 2009 > 7 > 2 > 310-314
Open Physics > 2012 > 10 > 2 > 478-484