"Fixed points of covering upper and lower approximation operators."

Ali Akbar Estaji, Mehdi Vatandoost, Rahimeh Pourkhandani (2019)

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DOI: 10.1007/S00500-019-04113-0

access: closed

type: Journal Article

metadata version: 2019-12-27

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Ali Akbar Estaji, Mehdi Vatandoost, Rahimeh Pourkhandani:
Fixed points of covering upper and lower approximation operators. Soft Comput. 23(22): 11447-11460 (2019)

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