Orbits of Primitive k-Homogenous Groups on (n-k)-Partitions with Applications to Semigroups 
          Araújo, João; Bentz, Wolfram; Cameron, P. J.  
          
          Transactions of the American Mathematical Society,  (2018),   
          http://www.ams.org/journals/tran/earlyview/tran7274/tran7274.pdf  
           
            
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