Physics Letters A
Physics Letters A > 2016 > 380 > 7-8 > 937-941
Physics Letters A > 2016 > 380 > 22-23 > 1971-1975
Physics Letters A > 2016 > 380 > 36 > 2854-2860
Physics Letters A > 2016 > 380 > 7-8 > 937-941
Physics Letters A > 2016 > 380 > 22-23 > 1971-1975
Physics Letters A > 2016 > 380 > 36 > 2854-2860