Physics Letters A
Physics Letters A > 1999 > 261 > 3-4 > 179-182
Physics Letters A > 2000 > 265 > 4 > 244-249
Physics Letters A > 2000 > 272 > 1-2 > 130-142
Physics Letters A > 2000 > 272 > 3 > 143-150
Physics Letters A > 2000 > 273 > 5-6 > 322-330
Physics Letters A > 2000 > 277 > 1 > 13-17
Physics Letters A > 2001 > 279 > 5-6 > 308-312
Physics Letters A > 2001 > 280 > 4 > 204-208
Physics Letters A > 2001 > 281 > 2-3 > 113-118
Physics Letters A > 2001 > 282 > 6 > 367-372
Physics Letters A > 2001 > 282 > 6 > 349-356
Physics Letters A > 2001 > 283 > 1-2 > 89-95
Physics Letters A > 2001 > 288 > 1 > 49-52
Physics Letters A > 2001 > 290 > 5-6 > 270-276
Physics Letters A > 2001 > 292 > 1-2 > 58-65
Physics Letters A > 2002 > 293 > 3-4 > 123-128
Physics Letters A > 2002 > 295 > 1 > 25-34
Physics Letters A > 2002 > 295 > 1 > 8-12
Physics Letters A > 2002 > 297 > 1-2 > 75-80
Physics Letters A > 2002 > 298 > 5-6 > 319-324