Physics Letters A
Physics Letters A > 2010 > 374 > 17-18 > 1885-1888
Physics Letters A > 2010 > 374 > 31-32 > 3119-3128
Physics Letters A > 2010 > 374 > 41 > 4260-4264
Physics Letters A > 2010 > 374 > 17-18 > 1885-1888
Physics Letters A > 2010 > 374 > 31-32 > 3119-3128
Physics Letters A > 2010 > 374 > 41 > 4260-4264