@article{GDZPPN002481774,
title = {Duals of Orbit Spaces in Groups With Relatively Compact Inner Automorphism Groups Are Hypergroups.},
journal = {Monatshefte f\"ur Mathematik},
volume = {87},
year = {1979},
pages = {229-238},
zbl = {0416.22008},
url = {http://dml.mathdoc.fr/item/GDZPPN002481774}
}
Henrichs, R.W.; Hartmann, K.; Lasser, R. Duals of Orbit Spaces in Groups With Relatively Compact Inner Automorphism Groups Are Hypergroups.. Monatshefte für Mathematik, Tome 87 (1979) pp. 229-238. http://gdmltest.u-ga.fr/item/GDZPPN002481774/