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@article{SF_1989__39_2_134989, author = {A.B. Engel and L. Makar-Limanov}, title = {On groups rings which are not {Ore} domains.}, journal = {Semigroup forum}, pages = {249--254}, publisher = {mathdoc}, volume = {39}, number = {2}, year = {1989}, zbl = {0669.16008}, url = {http://geodesic.mathdoc.fr/item/SF_1989__39_2_134989/} }
A.B. Engel; L. Makar-Limanov. On groups rings which are not Ore domains.. Semigroup forum, Tome 39 (1989) no. 2, pp. 249-254. http://geodesic.mathdoc.fr/item/SF_1989__39_2_134989/