1.
Zubairu MM. On the subsemigroup generated by idempotents of the semigroup of order preserving and decreasing contraction mappings of a finite chain: On the subsemigroup generated by idempotents. JNMS [Internet]. 2023 Jul. 28 [cited 2024 Jul. 20];42(2):140-52. Available from: https://ojs.ictp.it/jnms/index.php/jnms/article/view/934