Physics Letters B
Physics Letters B > 2011 > 701 > 5 > 660-666
Physics Letters B > 2011 > 701 > 5 > 526-529
Physics Letters B > 2011 > 702 > 1 > 12-15
Physics Letters B > 2011 > 703 > 5 > 537-542
Physics Letters B > 2011 > 704 > 5 > 655-658