Commuting polynomial operations of distributive lattices
          Behrisch, Mike; Couceiro, Miguel; Kearnes, Keith A.; Lehtonen, Erkko; Szendrei, Ágnes  
          
          Order, 29(2) (2012), 245-269  
          http://dx.doi.org/10.1007/s11083-011-9231-3  
           
          We describe which pairs of distributive lattice polynomial operations commute.  
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