Al - shabbani, Ali Kadhim, and Raad Aziz Hussain Al – Abdulla. 2019. “On B * C-Convergence of Filters”. Journal of Al-Qadisiyah for Computer Science and Mathematics 11 (4):Math Page 40– 50. https://doi.org/10.29304/jqcm.2019.11.4.640.