Physics Letters B
Physics Letters B > 2011 > 697 > 3 > 222-228
Physics Letters B > 2011 > 697 > 3 > 203-207
Physics Letters B > 2011 > 698 > 3 > 226-230
Physics Letters B > 2011 > 698 > 3 > 219-225
Physics Letters B > 2011 > 701 > 3 > 342-345