Physics Letters A
Physics Letters A > 2016 > 380 > 4 > 525-529
Physics Letters A > 2016 > 380 > 41 > 3326-3332
Physics Letters A > 2016 > 380 > 47 > 3963-3969
Physics Letters A > 2016 > 380 > 4 > 525-529
Physics Letters A > 2016 > 380 > 41 > 3326-3332
Physics Letters A > 2016 > 380 > 47 > 3963-3969