Physics Letters A
Physics Letters A > 2001 > 284 > 4-5 > 205-215
Physics Letters A > 2001 > 284 > 4-5 > 194-204
Physics Letters A > 2001 > 284 > 4-5 > 152-155
Physics Letters A > 2001 > 284 > 4-5 > 162-171
Physics Letters A > 2001 > 284 > 4-5 > 141-145
Physics Letters A > 2001 > 284 > 4-5 > 146-151
Physics Letters A > 2001 > 284 > 4-5 > 172-183
Physics Letters A > 2001 > 284 > 4-5 > 156-161
Physics Letters A > 2001 > 284 > 4-5 > 184-193