AL-SHUTNAWI, Basma; ZANNON, Mohammad. Q is a Convergence Set. American Scientific Research Journal for Engineering, Technology, and Sciences, Jordan, v. 11, n. 1, p. 169–172, 2015. Disponível em: https://www.asrjetsjournal.org/American_Scientific_Journal/article/view/610. Acesso em: 14 sep. 2025.