Ph.D. in Economics, University of Colorado-Boulder, USA, 1987

Fathollahzadeh, R. , Sharma D , Alhajji M , and Ulussever T, 2013, Macroeconomic Impact of contemporary Electricity Reform : 19 OECD and 7 Australian States ., Journal of Energy and Power Engineering, 7, 949-962.

Mansur Masih, Yakubu Haji Umar, and Mohsen Al-Hajji, 2008, Empirical Test of the Long-Run Fisher Effect: An Application of the ARDL Bounds Technique to Saudi Arabia ., Journal of International Finance & Economics, 8(1), 53-64.

Money and Banking, Macro Economics and Economics Development, Monetary Economics