@article{MAN_1987__277_164249,
     author = {S.M. Salamon and F.E. Burstall},
     title = {Tournaments, {Flags,} and {Harmonic} {Maps.}},
     journal = {Mathematische Annalen},
     pages = {249--266},
     publisher = {mathdoc},
     volume = {277},
     year = {1987},
     zbl = {0597.58005},
     url = {http://geodesic.mathdoc.fr/item/MAN_1987__277_164249/}
}