@article{05122327, title = {A symplectic approach to van den Ban's convexity theorem.}, journal = {Documenta Mathematica}, volume = {11}, year = {2006}, pages = {407-424}, zbl = {1108.53046}, language = {en}, url = {http://dml.mathdoc.fr/item/05122327} }
Foth, Philip; Otto, Michael. A symplectic approach to van den Ban's convexity theorem.. Documenta Mathematica, Tome 11 (2006) pp. 407-424. http://gdmltest.u-ga.fr/item/05122327/