Open Physics
Open Physics > 2006 > 4 > 1 > 87-104
Open Physics > 2006 > 4 > 1 > 73-86
Open Physics > 2006 > 4 > 1 > 20-29
Open Physics > 2007 > 5 > 1 > 91-102
Open Physics > 2008 > 6 > 3 > 422-426
Open Physics > 2010 > 8 > 2 > 178-183
Open Physics > 2010 > 8 > 5 > 798-803