محايري م., حمدان ر. ., and حرفوش ن. “Improve Performance in Software Defined Network Controller’s (HPE VAN) Using Computer Network Functionality Equipment”. Tishreen University Journal -Engineering Sciences Series, vol. 43, no. 1, Mar. 2021, https://journal.tishreen.edu.sy/index.php/engscnc/article/view/10450.