@article{GDZPPN002067161,
title = {Calibrated geometries in Grassmann manifolds.},
journal = {Commentarii mathematici Helvetici},
volume = {64},
year = {1989},
pages = {256-268},
zbl = {0681.53039},
url = {http://dml.mathdoc.fr/item/GDZPPN002067161}
}
Ziller, W.; Gluck, H.; Morgan, F. Calibrated geometries in Grassmann manifolds.. Commentarii mathematici Helvetici, Tome 64 (1989) pp. 256-268. http://gdmltest.u-ga.fr/item/GDZPPN002067161/