@article{MAN_1968__179_161778,
     author = {G. van DIJK},
     title = {On {Symmetry} of {Group} {Algebras} of {Motion} {Groups.}},
     journal = {Mathematische Annalen},
     pages = {219--226},
     year = {1968},
     volume = {179},
     zbl = {0167.14501},
     url = {http://geodesic.mathdoc.fr/item/MAN_1968__179_161778/}
}