@article{GDZPPN002111195,
title = {A Schur-Horn-Kostant convexity theorem for the diffeomorphism group of the annulus.},
journal = {Inventiones mathematicae},
volume = {114},
year = {1993},
pages = {511-530},
zbl = {0806.22012},
url = {http://dml.mathdoc.fr/item/GDZPPN002111195}
}
Bloch, A.M.; Flaschka, H.; Ratiu, T. A Schur-Horn-Kostant convexity theorem for the diffeomorphism group of the annulus.. Inventiones mathematicae, Tome 114 (1993) pp. 511-530. http://gdmltest.u-ga.fr/item/GDZPPN002111195/