@article{10_4171_dm_216,
     author = {Philip Foth and Michael Otto},
     title = {A symplectic approach to van den {Ban's} convexity theorem},
     journal = {Documenta mathematica},
     pages = {407--424},
     year = {2006},
     volume = {11},
     doi = {10.4171/dm/216},
     url = {http://geodesic.mathdoc.fr/articles/10.4171/dm/216/}
}