Physics Letters A
Physics Letters A > 2016 > 380 > 16 > 1432-1436
Physics Letters A > 2016 > 380 > 36 > 2819-2822
Physics Letters A > 2016 > 380 > 36 > 2803-2808
Physics Letters A > 2016 > 380 > 16 > 1432-1436
Physics Letters A > 2016 > 380 > 36 > 2819-2822
Physics Letters A > 2016 > 380 > 36 > 2803-2808