Adewuyi, A. A., and A. M. Naim. “The Nexus Between Rates of Return on Deposits of Islamic Banks and Interest Rates on Deposits of Conventional Banks in a Dual Banking System: A Cross Country Study”. International Journal of Economics and Financial Issues, vol. 6, no. 4S, July 2016, pp. 111-7, https://www.econjournals.com/index.php/ijefi/article/view/2697.