Characterization of quasi idempotent in semigroups of full contraction mappings. Proceedings of the Nigerian Society of Physical Sciences, [S. l.], v. 1, n. 1, p. 88, 2024. DOI: 10.61298/pnspsc.2024.1.88. Disponível em: https://rans.nsps.org.ng/index.php/pnspsc/article/view/88. Acesso em: 9 jan. 2025.