Physics Letters A
Physics Letters A > 2016 > 380 > 37 > 2953-2956
Physics Letters A > 2016 > 380 > 38 > 3103-3106
Physics Letters A > 2016 > 380 > 43 > 3645-3649
Physics Letters A > 2016 > 380 > 44 > 3748-3755
Physics Letters A > 2016 > 380 > 45 > 3828-3831
Physics Letters A > 2016 > 380 > 48 > 4044-4048