Physics Letters A
Physics Letters A > 2006 > 354 > 5-6 > 449-452
Physics Letters A > 2006 > 354 > 5-6 > 457-461
Physics Letters A > 2006 > 354 > 5-6 > 437-444
Physics Letters A > 2006 > 354 > 5-6 > 477-481
Physics Letters A > 2006 > 354 > 5-6 > 373-376
Physics Letters A > 2006 > 354 > 5-6 > 406-409
Physics Letters A > 2006 > 354 > 5-6 > 497-500
Physics Letters A > 2006 > 354 > 5-6 > 414-422