Physics Letters A
Physics Letters A > 2017 > 381 > 10 > 935-943
Physics Letters A > 2017 > 381 > 11 > 964-969
Physics Letters A > 2017 > 381 > 14 > 1261-1267
Physics Letters A > 2017 > 381 > 20 > 1753-1756
Physics Letters A > 2017 > 381 > 33 > 2699-2703
Physics Letters A > 2017 > 381 > 33 > 2754-2760
Physics Letters A > 2017 > 381 > 36 > 3079-3083