Physics Letters A
Physics Letters A > 2016 > 380 > 3 > 470-474
Physics Letters A > 2016 > 380 > 13 > 1236-1240
Physics Letters A > 2016 > 380 > 27-28 > 2233-2236
Physics Letters A > 2016 > 380 > 3 > 470-474
Physics Letters A > 2016 > 380 > 13 > 1236-1240
Physics Letters A > 2016 > 380 > 27-28 > 2233-2236