Intstitute of Social and Ecnomic Research, Osaka University

Covenant University

Kwansei Gakuin University, the Institute of Business and Accounting

Department of Economics, University of A Coruña and ECOBAS

University of Lausanne

Georgia State University

University of Rome Tor Vergata

Professor in economics

Associate Professor, New York City College of Technology, The City University of New York

Montclair State University