Physics Letters A
Physics Letters A > 2017 > 381 > 36 > 3134-3140
Physics Letters A > 2017 > 381 > 41 > 3548-3552
Physics Letters A > 2017 > 381 > 48 > 3978-3982
Physics Letters A > 2017 > 381 > 36 > 3134-3140
Physics Letters A > 2017 > 381 > 41 > 3548-3552
Physics Letters A > 2017 > 381 > 48 > 3978-3982