@article{05578759,
title = {On the nonexistence of certain morphisms from Grassmannian to Grassmannian in characteristic 0.},
journal = {Documenta Mathematica},
volume = {14},
year = {2009},
pages = {67-113},
zbl = {1167.14032},
language = {en},
url = {http://dml.mathdoc.fr/item/05578759}
}
Ramadoss, Ajay C. On the nonexistence of certain morphisms from Grassmannian to Grassmannian in characteristic 0.. Documenta Mathematica, Tome 14 (2009) pp. 67-113. http://gdmltest.u-ga.fr/item/05578759/