Osabuohien-Irabor, Osarumwense. “Unit Root Tests in the Presence of Structural Breaks: Evidence from African Stock Markets”. Economic Journal of Emerging Markets 12, no. 2 (October 7, 2020): 119–137. Accessed March 28, 2024. https://journal.uii.ac.id/JEP/article/view/16408.