Affiliation: | aDepartment of Economics Finance and Legal Studies, University of Alabama, Box 870224, Tuscaloosa, AL 35487, United States;bDepartment of Economics, Grand Valley State University, 401 W. Fulton St. Grand Rapids, MI 49504, United States;cDepartment of Economics, University of Missouri - St. Louis, One University Boulevard, St. Louis, MO 63121, United States |