Physics Letters A
Physics Letters A > 2003 > 308 > 4 > 267-279
Physics Letters A > 2003 > 308 > 4 > 235-242
Physics Letters A > 2003 > 308 > 4 > 280-284
Physics Letters A > 2003 > 308 > 4 > 285-293
Physics Letters A > 2003 > 308 > 4 > 294-301
Physics Letters A > 2003 > 308 > 4 > 256-258
Physics Letters A > 2003 > 308 > 4 > 302-307
Physics Letters A > 2003 > 308 > 4 > 308-311
Physics Letters A > 2003 > 308 > 4 > 259-266
Physics Letters A > 2003 > 308 > 4 > 249-255
Physics Letters A > 2003 > 308 > 4 > 243-248