@article{GDZPPN002329514,
title = {Tournaments, Flags, and Harmonic Maps.},
journal = {Mathematische Annalen},
volume = {277},
year = {1987},
pages = {249-266},
zbl = {0597.58005},
url = {http://dml.mathdoc.fr/item/GDZPPN002329514}
}
Salamon, S.M.; Burstall, F.E. Tournaments, Flags, and Harmonic Maps.. Mathematische Annalen, Tome 277 (1987) pp. 249-266. http://gdmltest.u-ga.fr/item/GDZPPN002329514/