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@article{MS2_1982__51_166799, author = {Ralf Fr\"oberg}, title = {A study of graded extremal rings and of monominal rings.}, journal = {Mathematica Scandinavica}, pages = {22--34}, publisher = {mathdoc}, volume = {51}, year = {1982}, zbl = {0498.13012}, url = {http://geodesic.mathdoc.fr/item/MS2_1982__51_166799/} }
Ralf Fröberg. A study of graded extremal rings and of monominal rings.. Mathematica Scandinavica, Tome 51 (1982), pp. 22-34. http://geodesic.mathdoc.fr/item/MS2_1982__51_166799/