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@article{PORMA_1968__27_1_115060, author = {Hoffman, A.E. and Leavitt, W.G.}, title = {Properties inherited by the lower radical}, journal = {Portugaliae mathematica}, pages = {63--66}, publisher = {mathdoc}, volume = {27}, number = {1}, year = {1968}, mrnumber = {0262278}, zbl = {0199.35401}, language = {en}, url = {http://geodesic.mathdoc.fr/item/PORMA_1968__27_1_115060/} }
Hoffman, A.E.; Leavitt, W.G. Properties inherited by the lower radical. Portugaliae mathematica, Tome 27 (1968) no. 1, pp. 63-66. http://geodesic.mathdoc.fr/item/PORMA_1968__27_1_115060/