Physics Letters B
Physics Letters B > 2001 > 521 > 3-4 > 217-224
Physics Letters B > 2001 > 521 > 3-4 > 391-399
Physics Letters B > 2001 > 521 > 3-4 > 204-210
Physics Letters B > 2001 > 521 > 3-4 > 315-319
Physics Letters B > 2001 > 521 > 3-4 > 211-216