Al-Ahmad, Z. and Ismaiel, L. 2016. Testing the PPP Using Unit Root Tests with Structural Breaks: Evidence from Politically Unstable Arab Countries. International Journal of Business, Economics and Management. 3, 12 (Nov. 2016), 173–187. DOI:https://doi.org/10.18488/journal.62/2016.3.12/62.3.173.187.