Physics Letters A
Physics Letters A > 2010 > 374 > 19-20 > 2089-2094
Physics Letters A > 2010 > 374 > 35 > 3685-3694
Physics Letters A > 2010 > 374 > 45 > 4625-4628
Physics Letters A > 2010 > 374 > 19-20 > 2089-2094
Physics Letters A > 2010 > 374 > 35 > 3685-3694
Physics Letters A > 2010 > 374 > 45 > 4625-4628