Physics Letters A
Physics Letters A > 2016 > 380 > 5-6 > 773-778
Physics Letters A > 2016 > 380 > 42 > 3469-3472
Physics Letters A > 2016 > 380 > 42 > 3465-3468
Physics Letters A > 2016 > 380 > 5-6 > 773-778
Physics Letters A > 2016 > 380 > 42 > 3469-3472
Physics Letters A > 2016 > 380 > 42 > 3465-3468