Physics Letters A
Physics Letters A > 2016 > 380 > 9-10 > 1066-1070
Physics Letters A > 2016 > 380 > 20 > 1724-1728
Physics Letters A > 2016 > 380 > 34 > 2603-2607
Physics Letters A > 2016 > 380 > 9-10 > 1066-1070
Physics Letters A > 2016 > 380 > 20 > 1724-1728
Physics Letters A > 2016 > 380 > 34 > 2603-2607