Physics Letters A
Physics Letters A > 2017 > 381 > 21 > 1795-1806
Physics Letters A > 2017 > 381 > 40 > 3487-3492
Physics Letters A > 2017 > 381 > 47 > 3960-3963
Physics Letters A > 2017 > 381 > 21 > 1795-1806
Physics Letters A > 2017 > 381 > 40 > 3487-3492
Physics Letters A > 2017 > 381 > 47 > 3960-3963