Physics Letters A
Physics Letters A > 2003 > 306 > 4 > 235-242
Physics Letters A > 2003 > 306 > 4 > 249-254
Physics Letters A > 2003 > 306 > 4 > 255-257
Physics Letters A > 2003 > 306 > 4 > 227-234
Physics Letters A > 2003 > 306 > 4 > 211-226
Physics Letters A > 2003 > 306 > 4 > 259-264
Physics Letters A > 2003 > 306 > 4 > 200-205
Physics Letters A > 2003 > 306 > 4 > 206-210
Physics Letters A > 2003 > 306 > 4 > 243-248
Physics Letters A > 2003 > 306 > 4 > 187-199
Physics Letters A > 2003 > 306 > 5-6 > 337-343
Physics Letters A > 2003 > 306 > 5-6 > 296-305
Physics Letters A > 2003 > 306 > 5-6 > 332-336