His research areas of specialization include public finance and economic development in South and Southeast Asia. He is currently interested in research on the growth of government and on the economics of aging. Other research interests are in the areas of labor-managed firms in developing countries, rural development, and socioeconomic problems of Vietnamese elderly immigrants living in the United States. He has published several articles in the Oxford Bulletin of Economics and Statistics, the Journal of Economic Studies, Applied Economics Letters, and Studi Economici as well as the Journal of Contemporary Asia. He has served as referee for the Journal of Economics, the Journal of Contemporary Business Issues, the Annals of Tourism Research, and Choice. He also reviewed five books, Readings in Public Finance, 2^nd edition, by Samuel H. Baker and Catherine S. Elliott, Principles of Economics, 4^th edition, by Karl E. Case and Ray C. Fair, Macroeconomics, 2^nd edition, by Roger Farmer, Control of Public Money by A. Premchand, and Sustainable Development in Asia, America and Europe with Global Applications by Jian-Ming Zhou.