CARPINTERO, C.; RAJESH, N.; ROSAS, E. PROPERTIES OF (γ, γ′)-SEMIOPEN SETS. Italian Journal of Pure and Applied Mathematics, [S. l.], v. 31, p. 219–226, 2013. Disponível em: https://journals.uniurb.it/index.php/ijpam/article/view/6141. Acesso em: 26 jul. 2026.