@article{GDZPPN002321556, title = {Rational Universal Fibrations and Flag Manifolds.}, journal = {Mathematische Annalen}, volume = {255}, year = {1981}, pages = {329-340}, zbl = {0466.55012}, url = {http://dml.mathdoc.fr/item/GDZPPN002321556} }
Meier, W. Rational Universal Fibrations and Flag Manifolds.. Mathematische Annalen, Tome 255 (1981) pp. 329-340. http://gdmltest.u-ga.fr/item/GDZPPN002321556/