Physics Letters A
Physics Letters A > 2004 > 327 > 4 > 312-319
Physics Letters A > 2004 > 327 > 4 > 327-331
Physics Letters A > 2004 > 327 > 4 > 284-289
Physics Letters A > 2004 > 327 > 4 > 337-343
Physics Letters A > 2004 > 327 > 4 > 290-295
Physics Letters A > 2004 > 327 > 4 > 272-283
Physics Letters A > 2004 > 327 > 4 > 320-326
Physics Letters A > 2004 > 327 > 4 > 344-351
Physics Letters A > 2004 > 327 > 4 > 263-271
Physics Letters A > 2004 > 327 > 4 > 332-336
Physics Letters A > 2004 > 327 > 4 > 296-311