Physics Letters B
Physics Letters B > 1998 > 419 > 1-4 > 285-290
Physics Letters B > 1998 > 433 > 3-4 > 377-384
Physics Letters B > 1999 > 471 > 1 > 58-64
Physics Letters B > 1998 > 419 > 1-4 > 285-290
Physics Letters B > 1998 > 433 > 3-4 > 377-384
Physics Letters B > 1999 > 471 > 1 > 58-64