@article{10_4064_cm_15_1_149_155,
     author = {Frank Harary},
     title = {The theory of tournaments: {A} miniature mathematical system},
     journal = {Colloquium Mathematicum},
     pages = {149--155},
     publisher = {mathdoc},
     volume = {15},
     number = {1},
     year = {1966},
     doi = {10.4064/cm-15-1-149-155},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/cm-15-1-149-155/}
}