Physics Letters A
Physics Letters A > 2016 > 380 > 37 > 2979-2983
Physics Letters A > 2016 > 380 > 38 > 3086-3091
Physics Letters A > 2016 > 380 > 44 > 3748-3755
Physics Letters A > 2016 > 380 > 37 > 2979-2983
Physics Letters A > 2016 > 380 > 38 > 3086-3091
Physics Letters A > 2016 > 380 > 44 > 3748-3755