- Combs, K. L., & Spry, J. A. (2019). The effect of lotto game changes and large jackpots on income elasticities and sales. Contemporary Economic Policy, (37)(2), pp. 261-273
- Combs, K. L., Kim, L., Landers, J. B., & Spry, J. A. (2016). The responsiveness of casino revenue to the casino tax rate. Public Budgeting and Finance, (36)(3), pp. 22-44
- Combs, K. L., Crowley, J. E., & Spry, J. A. (2014). The effect of New Jersey Lottery promotions on consumer demand and state profits. Eastern Economic Journal, (40), pp. 326-348
- Combs, K. L., & Spry, J. A. (2012). Who plays the numbers games in the middle of the day?. Applied Economics, (44)(7), pp. 889-897
- Combs, K. L., Gibson, S., Hays, J. M., Saly, P., & Wendt, J. T. (2008). Enhancing curriculum and delivery: Linking assessment to learning objectives. Assessment and Evaluation in Higher Education, (33)(1), pp. 87-102
- Combs, K. L., Kim, J., & Spry, J. A. (2008). The relative regressivity of seven lottery games. Applied Economics, (40)(1), pp. 35-39
- Combs, K. L. (2005). The welfare effects of research and production joint ventures. Journal of Technology Transfer, (30)(1-2), pp. 227-239
- Combs, K. L. (2003). Innovation policy in search of an economic foundation: The case of research partnerships in the United States. Technology Analysis and Strategic Management, (15)(2), pp. 177-187
- Audretsch, D., Bozeman,, B., Combs, K. L., Feldman, M., & Link, A. (2002). The economics of science and technology. Journal of Technology Transfer, (27)(1), pp. 155-203
- Combs, K. L. (1999). Limited liability companies and technology transfer. Journal of Technology Transfer, (24)(1), pp. 25-35
- Combs, K. L., & Schreft, S. L. (1999). Do consumers really want credit card reform. Economic Review, (3rd),
- Combs, K. L. (1993). The role of information sharing in cooperative research and development. International Journal of Industrial Organization, (11), pp. 535-551
- Combs, K. L. (1992). Cost sharing versus multiple research projects in cooperative R and D. Economics Letters, (39), pp. 353-357
- Combs, K. L., & Spry, J. A. (2009). Economics of Betting Markets. In David Peel (Ed.), The relative regressivity of seven lottery games Ch 5. Routledge
- Combs, K. L., & Gray, C. M. (2007). Managerial economics and organizational architecture 4th ed. McGraw-Hill
- Combs, K. L., Gray, C. M., & Spry, J. A. (2007). Updated managerial economics and organizational architecture test bank. McGraw-Hill
- Combs, K. L. (2005). Essays in Honor of Edwin Mansfield: The Economics of R & D, Innovation, & Technological Change. In Albert N. Link & Frederic M. Scherer (Ed.), The welfare effects of research and production joint ventures. Springer
- Minnesota Economic Association
- National Tax Association
- Southern Economic Association
- Eastern Economic Association
- Church of St. Mark, Finance Council
- Professor of Business Economics, University of St. Thomas, St. Paul / Minneapolis (2006 - present)
- Department Chair - Finance, University of St. Thomas, Saint Paul / Minneapolis (2015 - present)
- Professor of Economics, University of St. Thomas, St. Paul / Minneapolis (2002 - 2006)
- Associate Professor of Economics, University of St. Thomas, St. Paul / Minneapolis (1999 - 2002)
- Visiting Faculty, University of Minnesota, Minneapolis (1996 - 1999)
- Associate Professor with tenure, California State University Department of Economics and Statistics, Los Angeles (1993 - 1999)
- Adjunct Instructor, University of St. Thomas, St. Paul / Minneapolis (1997 - 1999)
- Assistant Professor, California State University Department of Economics and Statistics, Los Angeles (1986 - 1992)
- Visiting Assistant Professor, University of Southern California, Department of Finance and Business Economics, (1989 - 1990)
- Forecaster, Pacific Northwest Bell, Seattle (1979 - 1981)