Fundamenta Informaticae > 2009 > Vol. 94, nr 1 > 41-48
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journal ISSN : | 0169-2968 |
journal e-ISSN : | 1875-8681 |
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Bibliography
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[1] S. Burris and H.P. Sankappanavar, A course in universal algebra, (1981) Springer.
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[2] R. Goldblatt, Logics of time and computation (2nd. edition), CSLI Lecture Notes No.7 (1992)
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[3] T.B. Iwinski, Algebraic approach to rough sets, Bull. Pol. Ac. Math., vol.35 (1987), 673-683.