References:
Algorithms of Informatics vol. 3| Digital Textbook Library. Retrieved from http://www.tankonyvtar.hu/
en/tartalom/tamop425/0046_algorithms_of_informatics_volume3/ch07s04.html

Benjamin, A. T. (2009). Discrete Mathematics. The Great Courses. Print.

Mathonline. Retrieved from http://mathonline.wikidot.com/tournaments-and-rankings
Tournament. Retrieved from http://mathworld.wolfram.com/Tournament.html
https://www.researchgate.net/profile/Vasif_Nabiyev/publication/237490898/figure/fig3/AS:298785310822401@1448247377159/Figure-3-The-3-mixed-tournament-graph.png