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A note on $$\phi$$-$$\lambda$$-rings and $$\phi$$-$$\Delta$$-rings

Crossref DOI link: https://doi.org/10.1007/s12215-020-00580-9

Published Online: 2021-01-05

Published Print: 2021-12

Update policy: https://doi.org/10.1007/springer_crossmark_policy

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