On C-Left Hyperideals of Ordered Semihypergroups. Communications in Mathematical Research, [S. l.], v. 33, n. 3, p. 223–237, 2019. DOI: 10.13447/j.1674-5647.2017.03.04. Disponível em: https://global-sci.com/index.php/cmr/article/view/8930. Acesso em: 5 dec. 2025.