@article{GDZPPN002444577, title = {(1,1)-geodesic maps into Grassmann manifolds.}, journal = {Mathematische Zeitschrift}, volume = {220}, year = {1995}, pages = {337-346}, zbl = {0863.53046}, url = {http://dml.mathdoc.fr/item/GDZPPN002444577} }
Tribuzy, R.; Eschenburg, J.-H. (1,1)-geodesic maps into Grassmann manifolds.. Mathematische Zeitschrift, Tome 220 (1995) pp. 337-346. http://gdmltest.u-ga.fr/item/GDZPPN002444577/