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