Aziz Hussain, Raad, and Ghadeer khudhair obayes. “Coc-B-Connected Spaces”. Journal of Al-Qadisiyah for Computer Science and Mathematics, vol. 8, no. 1, Aug. 2017, pp. 43-49, https://jqcsm.qu.edu.iq/index.php/journalcm/article/view/42.