ROSAS, Ennis; CARPINTERO, Carlos; HUSSAIN, Sabir. (i, j)-ω-semiopen sets and (i, j)-ω-semicontinuity in bitopological spaces. CUBO, A Mathematical Journal, [S. l.], v. 17, n. 3, p. 43–51, 2015. DOI: 10.4067/S0719-06462015000300003. Disponível em: https://cubo.ufro.cl/index.php/cubo/article/view/1161. Acesso em: 12 oct. 2025.