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@article{MAN_1979__239_163202, author = {R. Rousseau and A. van Daele}, title = {Crossed {Products} of {Communtation} {Systems.}}, journal = {Mathematische Annalen}, pages = {7--20}, publisher = {mathdoc}, volume = {239}, year = {1979}, zbl = {0389.46046}, url = {http://geodesic.mathdoc.fr/item/MAN_1979__239_163202/} }
R. Rousseau; A. van Daele. Crossed Products of Communtation Systems.. Mathematische Annalen, Tome 239 (1979), pp. 7-20. http://geodesic.mathdoc.fr/item/MAN_1979__239_163202/