@article{10_4153_CJM_2008_044_4,
     author = {Cornulier, Yves de and Tessera, Romain},
     title = {Isometric {Group} {Actions} on {Hilbert} {Spaces:} {Structure} of {Orbits}},
     journal = {Canadian journal of mathematics},
     pages = {1001--1009},
     year = {2008},
     volume = {60},
     number = {5},
     doi = {10.4153/CJM-2008-044-4},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-2008-044-4/}
}