Ansar, Mehreen, Ijaz Ali Shokat, Mubeen Fatima, and Kashif Nazir. 2018. “Security of Information in Cloud Computing: A Systematic Review”. American Scientific Research Journal for Engineering, Technology, and Sciences 48 (1):90-103. https://www.asrjetsjournal.org/index.php/American_Scientific_Journal/article/view/4451.