Mustafa Maad Hamdi, Lukman Audah, Sami Abduljabbar Rashid, Ahmed Shamil Mustafa, Mohammed Salah Abood. “A Survey on Data Dissemination and Routing Protocol in VANET: Types, Challenges, Opportunistic and Future Role”. International Journal of Advanced Science and Technology, Vol. 29, no. 05, May 2020, pp. 6473 -82, http://sersc.org/journals/index.php/IJAST/article/view/15966.