Physics Letters B
Physics Letters B > 2011 > 694 > 4-5 > 482-484
Physics Letters B > 2011 > 697 > 1 > 75-79
Physics Letters B > 2011 > 699 > 3 > 164-168
Physics Letters B > 2011 > 701 > 3 > 321-326
Physics Letters B > 2011 > 703 > 4 > 469-474