Physics Letters A
Physics Letters A > 1996 > 216 > 6 > 255-261
Physics Letters A > 1996 > 216 > 6 > 303-306
Physics Letters A > 1996 > 216 > 6 > 278-282
Physics Letters A > 1996 > 216 > 6 > 296-302
Physics Letters A > 1996 > 216 > 6 > 235-239
Physics Letters A > 1996 > 216 > 6 > 229-234
Physics Letters A > 1996 > 216 > 6 > 313-320
Physics Letters A > 1996 > 216 > 6 > 240-246
Physics Letters A > 1996 > 216 > 6 > 289-295
Physics Letters A > 1996 > 216 > 6 > 269-277
Physics Letters A > 1996 > 216 > 6 > 247-254
Physics Letters A > 1996 > 216 > 6 > 262-268
Physics Letters A > 1996 > 216 > 6 > 321-323
Physics Letters A > 1996 > 216 > 6 > 283-288
Physics Letters A > 1996 > 216 > 6 > 307-312