Physics Letters B
Physics Letters B > 2011 > 696 > 5 > 505-508
Physics Letters B > 2011 > 700 > 1 > 25-28
Physics Letters B > 2011 > 701 > 1 > 89-92
Physics Letters B > 2011 > 701 > 1 > 137-143
Physics Letters B > 2011 > 702 > 2-3 > 154-157