- University of Freiburg
- University of Eastern Piedmont
External person
- Department of Economics
- Cornell University
- Department of Economics
External person
- Department of Economics and Social Sciences
- John Cabot University
External person
- European University at St Petersburg
- Russian Academy of Sciences
- St. Petersburg State University
External person
- School of Business
- Florida Atlantic University
- Department of Economics
External person
- West Virginia University
- College of Business and Economics
- University of Tulsa
External person
- Department of Economics
- Indiana University Bloomington
External person
- Montclair State University
External person
- New York Botanical Garden
External person
- Department of Earth and Environmental Studies
- Montclair State University
External person
- University of Massachusetts
External person
- University of Connecticut
External person
- Nanyang Technological University
External person
- U.S. Postal Service
- West Virginia University
- College of Business and Economics
- Montclair State University
- United States Post Office
- Independant Scholar
External person
