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2. Ranking tournaments;Alon;SIAM J. Discrete Math.,2006
3. On the acyclic disconnection and the girth;Balbuena;Discrete Appl. Math.,2015
4. The minimum feedback arc set problem is np-hard for tournaments;Charbit;Comb. Probab. Comput.,2007
5. Ordering by weighted number of wins gives a good ranking for weighted tournaments;Coppersmith,2006