Open Physics
Open Physics > 2008 > 6 > 1 > 109-115
Open Physics > 2009 > 7 > 1 > 12-21
Open Physics > 2009 > 7 > 4 > 704-710
Open Physics > 2010 > 8 > 3 > 438-444
Open Physics > 2012 > 10 > 5 > 1059-1064
Open Physics > 2008 > 6 > 1 > 109-115
Open Physics > 2009 > 7 > 1 > 12-21
Open Physics > 2009 > 7 > 4 > 704-710
Open Physics > 2010 > 8 > 3 > 438-444
Open Physics > 2012 > 10 > 5 > 1059-1064