@article{1255644951, author = {Wolf, Joseph A.}, title = {Geodesic spheres in Grassmann manifolds}, journal = {Illinois J. Math.}, volume = {7}, number = {1}, year = {1963}, pages = { 425-446}, language = {en}, url = {http://dml.mathdoc.fr/item/1255644951} }
Wolf, Joseph A. Geodesic spheres in Grassmann manifolds. Illinois J. Math., Tome 7 (1963) no. 1, pp. 425-446. http://gdmltest.u-ga.fr/item/1255644951/