1. Stability of kings in tournaments;Brigland,1964
2. The radii of n-partite tournaments;Gutin;Math. Notes,1986
3. Kings in semicomplete digraphs;Gutin;J. Graph Theory,2000
4. Multipartite tournaments having exactly four 4-kings, combinatorics;Koh,1994
5. Multipartite tournaments with prescribed sets of kings;Koh;Bull. Inst. Combin. Appl.,1995