Oluwatobi, Stephen, Oluyomi Ola-David, Isaiah Olurinola, Philip Alege, and Adeyemi Ogundipe. 2016. “Human Capital, Institutions and Innovation in Sub-Saharan Africa”. International Journal of Economics and Financial Issues 6 (4):1507-14. https://econjournals.com/index.php/ijefi/article/view/1810.