Physics Letters A
Physics Letters A > 2016 > 380 > 3 > 480-484
Physics Letters A > 2016 > 380 > 33 > 2549-2560
Physics Letters A > 2016 > 380 > 43 > 3601-3606
Physics Letters A > 2016 > 380 > 3 > 480-484
Physics Letters A > 2016 > 380 > 33 > 2549-2560
Physics Letters A > 2016 > 380 > 43 > 3601-3606