@article{DAN_1994_336_3_a9,
     author = {V. S. Levchenkov},
     title = {Choice based on tournament relations},
     journal = {Doklady Akademii Nauk},
     pages = {324--327},
     publisher = {mathdoc},
     volume = {336},
     number = {3},
     year = {1994},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1994_336_3_a9/}
}