Physics Letters B
Physics Letters B > 1997 > 406 > 3 > 232-236
Physics Letters B > 2000 > 476 > 1-2 > 65-72
Physics Letters B > 2000 > 488 > 1 > 55-62
Physics Letters B > 1997 > 406 > 3 > 232-236
Physics Letters B > 2000 > 476 > 1-2 > 65-72
Physics Letters B > 2000 > 488 > 1 > 55-62