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@article{MZ_1962__80_170087, author = {B.H. Neumann and Hanna Neumann and Peter M. Neumann}, title = {Wreath products and varieties of groups.}, journal = {Mathematische Zeitschrift}, pages = {44--62}, publisher = {mathdoc}, volume = {80}, year = {1962}, zbl = {0105.02003}, url = {http://geodesic.mathdoc.fr/item/MZ_1962__80_170087/} }
B.H. Neumann; Hanna Neumann; Peter M. Neumann. Wreath products and varieties of groups.. Mathematische Zeitschrift, Tome 80 (1962), pp. 44-62. http://geodesic.mathdoc.fr/item/MZ_1962__80_170087/