Olufemi, A.P., Adewale, A.O. and Oseko, M.S. (2017) “Efficiency of Foreign Exchange Markets in Sub-Saharan Africa in the Presence of Structural Break: A Linear and Non-Linear Testing Approach”, Journal of Economics and Behavioral Studies, 9(4(J), pp. 122–131. doi:10.22610/jebs.v9i4(J).1827.