Nikopour, Hesam; Shah Habibullah, Muzafar; Schneider, Friedrich and Law, Siong Hook (2009): Foreign Direct Investment and Shadow Economy: A Causality Analysis Using Panel Data. Unpublished.
Nikopour, Hesam and Shah Habibullah, Muzafar (2010): Shadow Economy and Poverty. Unpublished.
Nikopour, Hesam; Shah Habibullah, Muzafar and Schneider, Friedrich (2008): The shadow economy Kuznets’s curve panel data analysis. Unpublished.
