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Brzeziński, Tomasz; Hajac, Piotr M. Coalgebra extensions and algebra coextensions of Galois type. (English) Zbl 0923.16031 Commun. Algebra 27, No. 3, 1347-1367 (1999). Reviewer: Margaret Beattie (Sackville) MSC: 16W30 16W20 × Cite Format Result Cite Review PDF Full Text: DOI arXiv