Physics Letters A
Physics Letters A > 2016 > 380 > 9-10 > 1087-1092
Physics Letters A > 2016 > 380 > 13 > 1241-1246
Physics Letters A > 2016 > 380 > 39 > 3212-3216
Physics Letters A > 2016 > 380 > 41 > 3404-3413
Physics Letters A > 2016 > 380 > 48 > 4075-4082