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- [2] SEMIGROUP ALGEBRAS WHOSE IDEALS ARE SPANNED BY SEMIGROUP IDEALS NOTICES OF THE AMERICAN MATHEMATICAL SOCIETY, 1969, 16 (01): : 302 - &
- [3] ON THE SEMIGROUP OF BI-IDEALS OF AN ORDERED SEMIGROUP KRAGUJEVAC JOURNAL OF MATHEMATICS, 2023, 47 (03): : 339 - 345