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@article{MAN_1980__247_163359, author = {Werner End}, title = {Some {Properties} of the {b-Product.}}, journal = {Mathematische Annalen}, pages = {187--190}, publisher = {mathdoc}, volume = {247}, year = {1980}, zbl = {0411.55011}, url = {http://geodesic.mathdoc.fr/item/MAN_1980__247_163359/} }
Werner End. Some Properties of the b-Product.. Mathematische Annalen, Tome 247 (1980), pp. 187-190. http://geodesic.mathdoc.fr/item/MAN_1980__247_163359/