Physics Letters A
Physics Letters A > 2016 > 380 > 1-2 > 267-271
Physics Letters A > 2016 > 380 > 3 > 377-380
Physics Letters A > 2016 > 380 > 27-28 > 2200-2203
Physics Letters A > 2016 > 380 > 1-2 > 267-271
Physics Letters A > 2016 > 380 > 3 > 377-380
Physics Letters A > 2016 > 380 > 27-28 > 2200-2203