Nzeh, Innocent Chile, Hycenth Oguejiofoalu Richard Ogwuru, David Ogomegbunam Okolie, and Jonathan Ibekwe Okolie. “Economic Openness, Institutional Quality and Per Capita Income: Evidence from the Economic Community of West African States (ECOWAS)”. Research Papers in Economics and Finance 6, no. 2 (February 17, 2023): 50–67. Accessed December 18, 2024. https://journals.ue.poznan.pl/REF/article/view/193.