Physics Letters A
Physics Letters A > 2014 > 378 > 5-6 > 519-523
Physics Letters A > 2014 > 378 > 26-27 > 1867-1870
Physics Letters A > 2014 > 378 > 47 > 3549-3553
Physics Letters A > 2014 > 378 > 5-6 > 519-523
Physics Letters A > 2014 > 378 > 26-27 > 1867-1870
Physics Letters A > 2014 > 378 > 47 > 3549-3553