Physics Letters B
Physics Letters B > 2011 > 695 > 1-4 > 252-258
Physics Letters B > 2011 > 696 > 5 > 468-472
Physics Letters B > 2011 > 697 > 1 > 15-20
Physics Letters B > 2011 > 698 > 4 > 271-274
Physics Letters B > 2011 > 698 > 4 > 275-283
Physics Letters B > 2011 > 701 > 1 > 75-81