ALI, Tabarak Ayad; ESMAEEL, Rana B.; ABDELAZIZ E. RADWAN. On -open sets. Ibn AL-Haitham Journal For Pure and Applied Sciences, Baghdad, Iraq., v. 38, n. 2, p. 418–424, 2025. DOI: 10.30526/rbbyyy83. Disponível em: https://jih.uobaghdad.edu.iq/index.php/j/article/view/3938. Acesso em: 22 apr. 2025.