• “Tax Evasion and Currency Ratio: Panel Evidence from Developing Countries,” (with Mussie Tessema, and Wei-Choun Yu), Journal of Global Economics, Management and Business Research, 7(3), 2016.

• “Effect of Employee Background on Perceived Organizational Justice: Managerial Implications,” (with Mussie Tessema, Goitom Tsegai, Kathryn Ready and Brian Windrow), International Review of Administrative Sciences, 80(2), 2014.

• “Using Dynamic Panel Methods to Estimate Shadow Economy Around the World 1990-2006,” (with James Alm), Public Finance Review, 41(5): 510-543, (2013)

• “The Effects of Employee Recognition, Pay and Benefits on Job Satisfaction: Cross-Country Evidence,” (with Mussie Tessema and Kathryn J. Ready), Journal of Business and Economics, Volume 4, Issue 1: (2013)

• “Human Resources Management Practices and Challenges: Evidences from Africa,” (with Mussie Tessema), Current Politics and Economics of Africa, Volume 4, Issue 3 (2012).

• “Explaining the Growth of Government Spending in South Africa,” (with James Alm), South African Journal of Economics, Vol. 78, Issue 2 (June 2010), Pages 152-169

Working Papers

• “Welfare Cost of Food Price Increase,” with Kai Sun

• “Nonparametric Estimation of Labor Supply Function Using Shape-Restricted Regression,”

• “Marginal Tax Rates and Investment in the United States,” in progress