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@article{IM_1987__88_143467, author = {M. Yamasaki}, title = {L-groups of crystallographic groups.}, journal = {Inventiones mathematicae}, pages = {571--602}, publisher = {mathdoc}, volume = {88}, year = {1987}, zbl = {0622.57022}, url = {http://geodesic.mathdoc.fr/item/IM_1987__88_143467/} }
M. Yamasaki. L-groups of crystallographic groups.. Inventiones mathematicae, Tome 88 (1987), pp. 571-602. http://geodesic.mathdoc.fr/item/IM_1987__88_143467/