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Список литературы
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J. Zelmanowitz, Comm. Algebra, 9:1 (1981), 23–45    |
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С. В. Зеленов, УМН, 56:3 (2001), 167–168  |
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M. Kilp, U. Krauner, A. V. Mikhalev, Monoids, Acts and Categories, de Gruyter, Berlin, 2000 |
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C. Nǎstǎsescu, F. van Oystaeyen, Graded Ring Theory, North-Holland, Amsterdam, 1982 |
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G. Abrams, C. Menini, A. del Rio, Comm. Algebra, 22:13 (1994), 5343–5388 |
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C. Nǎstǎsescu, S. Raianu, F. van Oystaeyen, Math. Z., 203:4 (1990), 605–627 |
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С. В. Зеленов, Труды 6-х математических чтений МГСУ, МГСУ, М., 1999, 107–110 |
