@article{10_37236_1297,
     author = {Noga Alon and Mikl\'os Ruszink\'o},
     title = {Short certificates for tournaments},
     journal = {The electronic journal of combinatorics},
     year = {1997},
     volume = {4},
     number = {1},
     doi = {10.37236/1297},
     zbl = {0885.05067},
     url = {http://geodesic.mathdoc.fr/articles/10.37236/1297/}
}