A study on Soft Pre-Open Sets using γ Operation. Iraqi Journal of Science, [S. l.], v. 62, n. 4, p. 1276–1283, 2021. DOI: 10.24996/ijs.2021.62.4.23. Disponível em: https://ijs.uobaghdad.edu.iq/index.php/eijs/article/view/2738.. Acesso em: 3 may. 2024.