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Swamy, U. M.; Murti, G. Suryanarayana Boolean centre of a universal algebra. (English) Zbl 0478.08003 Algebra Univers. 13, 202-205 (1981). MSC: 08A30 08B10 PDFBibTeX XMLCite \textit{U. M. Swamy} and \textit{G. S. Murti}, Algebra Univers. 13, 202--205 (1981; Zbl 0478.08003) Full Text: DOI