Physics Letters A
Physics Letters A > 1995 > 209 > 3-4 > 184-188
Physics Letters A > 1996 > 217 > 1 > 31-42
Physics Letters A > 1996 > 222 > 1-2 > 5-13
Physics Letters A > 1997 > 224 > 3 > 154-158
Physics Letters A > 1997 > 225 > 4-6 > 287-295
Physics Letters A > 1997 > 236 > 1-2 > 69-72
Physics Letters A > 1998 > 246 > 3-4 > 299-305
Physics Letters A > 1999 > 262 > 1 > 83-85
Physics Letters A > 2000 > 264 > 6 > 449-458
Physics Letters A > 2000 > 266 > 4-6 > 364-369
Physics Letters A > 2000 > 276 > 1-4 > 91-96
Physics Letters A > 2000 > 278 > 1-2 > 59-67
Physics Letters A > 2001 > 278 > 4 > 198-208
Physics Letters A > 2001 > 279 > 5-6 > 355-360
Physics Letters A > 2001 > 291 > 2-3 > 124-132
Physics Letters A > 2002 > 292 > 4-5 > 256-262
Physics Letters A > 2002 > 293 > 1-2 > 45-49
Physics Letters A > 2002 > 295 > 2-3 > 133-138
Physics Letters A > 2002 > 296 > 1 > 34-42
Physics Letters A > 2003 > 307 > 4 > 239-243