Physics Letters B
Physics Letters B > 2011 > 700 > 5 > 336-342
Physics Letters B > 2011 > 705 > 1-2 > 143-147
Physics Letters B > 2011 > 705 > 3 > 273-278
Physics Letters B > 2011 > 700 > 5 > 336-342
Physics Letters B > 2011 > 705 > 1-2 > 143-147
Physics Letters B > 2011 > 705 > 3 > 273-278