[46] Density Dependence of Entrepreneurial Dynamics: Competition, Opportunity Cost, or Minimum Efficient Scale? [with Gorkem Aksaray], Management Science, forthcoming.

[45] Hierarchies and Entrepreneurship [with Joacim Tag and Thomas Astebro],  European Economic Review, 89:129-147 (October 2016).

[44] Skill Balance and Entrepreneurship. Evidence from Online Career Histories [with Li-Wei Chen]. Entrepreneurship Theory and Practice,40(2): 289-305 (March 2016).

[43] New Firm Performance and the Replacement of Founders [with Jing Chen]. Strategic Entrepreneurship Journal, 9(3):243–262 (September 2015).

[42] The Relationship Between Unit Cost and Cumulative Quantity and the Evidence for Organizational Learning-by-Doing. Journal of Economic Perspectives, 26(3), (Summer 2012).

[41] Stars and Misfits. Self-Employment and Labor Market Frictions. [with Thomas Astebro and Jing Chen].  Management Science,  57:1999-2017 (November 2011). Online appendix.

[40] Entrepreneurs: Jacks of all Trades or Hobos? [with Thomas Astebro].  Research Policy, 40:637-664 (June 2011).

[39] Employee Spinoffs and the Choice of Technology [with Jing Chen].  Review of Economic Dynamics. 14:455–474 (June 2011).

[38] Disagreements and Intra-Industry Spinoffs [with Steven Klepper].  International Journal of Industrial Organization, 28(5): 526-538 (September 2010). 

[37] Learning by Doing. Chapter 11 in the Handbook of Economics of Technical Change, edited by Bronwyn H. Hall and Nathan Rosenberg, North-Holland/Elsevier (2010).

[36] Sorting, Selection, and Industry Shakeouts [with Mihaela Pintea]. Review of Industrial Organization, 33(1):23-40 (August 2008).

[35] Desperate Housewives? Communication Difficulties and the Dynamics of Marital (un)Happiness. The Economic Journal, 118: 1640-1669 (October 2008).

[34] How Much Did the Liberty Shipbuilders Forget? Management Science, 53(6):908-918 (June 2007).

[33] Technological Complexity and Economic Growth [with Mihaela Pintea]. Review of Economic Dynamics, 10(2):276-293 (April 2007).

[32] Submarkets and the Evolution of Market Structure [with Steven Klepper]. RAND Journal of Economics, 37(4):862-888 (March 2007).

[31] Founder Quality and Firm Performance: Implications for Local Development Strategies. Australian Economic Review, 40(1):97-105 (March 2007).

[30] Spinoff Entry in High-Tech Industries: Motives and Consequences [with Steven Klepper]. In Franco Malerba and Stefano Brusoni (eds.) Perspectives on Innovation, Chapter 6, pp. 187-218.Cambridge:CambridgeUniversity Press, (March 2007).

[29] Collective Equipoise, Disappointment and the Therapeutic Misconception: On the Consequences of  Selection for Clinical Research [with Margaret Byrne]. Medical Decision Making, 26(5):467-479 (September/October 2006).

[28] Technical Change and the Demand for Skills During the Second Industrial Revolution: Evidence from the Merchant Marine, 1891-1912 [with Aimee Chin and Chinhui Juhn]. Review of Economics and Statistics, 88(3):572-578 (August 2006).

[27] Patent Citations and the Geography of Knowledge Spillovers: Evidence from Inventor- and Examiner-Added Citations. Review of Economics and Statistics, 88(2):383-389 (May 2006).

[26] Patent Citations and the Geography of Knowledge Spillovers: A Reassessment [with Melanie Fox Kean]. American Economic Review, 95(1): 450-460 (March 2005).

Reprinted in Zoltan J. Acs (ed.), The Knowledge Spillover Theory of Entrepreneurship, Edward Elgar (2010).

[25] Patent Citations and the Geography of Knowledge Spillovers: A Reassessment: Reply [with Melanie Fox Kean]. American Economic Review, 95(1): 465-466 (March 2005).

[24] Selection and Firm Survival. Evidence from the Shipbuilding Industry, 1825-1914. Review of Economics and Statistics, 87(1):26-36 (February 2005).

[23] A Positive Analysis of Financial Incentives for Cadaveric Organ Donation: Reply to Tabarrok  [with Margaret Byrne]. Econ Journal Watch (March 2004).

[22] Technological Change and the Age-Earnings Profile: Evidence from the International Merchant Marine, 1861-1912. Review of Economic Dynamics6(3):578-601 (July 2003).

[21] Learning from Experience and Learning From Others. An exploration of learning and spillovers in wartime shipbuilding [with Rebecca Achee Thornton]. American Economic Review, 91(5):1350-1368 (December 2001).

[20] The Microeconomics of an R&D-Based Model of Endogenous Growth. Journal of Economic Growth, 6(4):263-283 (December 2001).

[19] Screening and Preventable Illness [with Margaret Byrne]. Journal of Health Economics, 20(6): 1077-1088 (November 2001).

[18] How Much Did the Liberty Shipbuilders Learn? New Evidence for an Old Case Study. Journal of Political Economy, 109(1):103-137 (February 2001).

Reprinted in Daniel F. Spulber, (ed)., Famous Fables of Economics, Basil Blackwell, 2001, pp. 262-292 (2001).

[17] A Positive Analysis of Financial Incentives for Cadaveric Organ Donation  [with Margaret Byrne]. Journal of Health Economics, 20(1):69-83 (January 2001). 

[16] Learning from the Experience of Others. Parameter Uncertainty and Economic Growth in a Model of Creative Destruction. Journal of Economic Dynamics and Control, 24(9):1285-1314 (August 2000).

[15] Endogenous Growth in a Cross-Section of Countries [with Elias Dinopoulos]. Journal of International Economics, 51(2):335-362 (August 2000).

[14] Process versus Product Innovation: Do Consumption Data Contain Any Information? [with Doug Waldo]. Southern Economic Journal, 67(1):155-170 (July 2000).

[13] Death and Dignity: Terminal Illness and the Market for Non-Treatment [with Margaret Byrne]. Journal of Public Economics, 76(2):263-94 (May 2000).

[12] Rationality, Rules of Thumb and R&D. Structural Change and Economic Dynamics, 10(3-4):321-40 (December 1999).

[11] Scale Effects in Schumpeterian Models of Economic Growth [with Elias Dinopoulos]. Journal of Evolutionary Economics, 9(2):157-186 (May 1999).

[10] Reassessing the Empirical Validity of the Human Capital Augmented Neoclassical Growth Model [with Elias Dinopoulos]. Journal of Evolutionary Economics, 9(1):135-154 (February 1999).

Reprinted in U. Cantner, H. Hanusch and S. Klepper (eds.), Economic Evolution, Learning, and Complexity,Amsterdam: Springer/Physica, pp. 245-264 (2000).

[9] Schumpeterian Growth without Scale Effects [with Elias Dinopoulos]. Journal of Economic Growth, 3(4):313-337 (December 1998).

[8] Physical Linkages between Trade and Environmental Quality: A Review of the Evidence [with Laura Strohm]. Journal of Environment and Development, 5(4):365-390, (December 1996).

[7] A Contribution to the Empirics of Endogenous Growth [with Elias Dinopoulos]. Eastern Economic Journal, 22:389-400 (November 1996).

[6] Technological Opportunity and the Growth of Knowledge: A Schumpeterian Approach to Measurement Journal of Evolutionary Economics, 6(1):77-98 (March 1996).

[5] The Capital-Energy Substitutability Debate: A New Look [with Timothy Taylor]. Review of Economics and Statistics, 77(3):565-569 (August 1995).

[4] Cyclical Technological Evolution and Comparative Economic Growth [with Elias Dinopoulos], Estudios de Economia, 22(2):133-157 (December 1995).

[3] Growth and Trustified Capitalism [with Doug Waldo]. Journal of Monetary Economics, 34:445-462 (December 1994).

[2] Policy Drought. The Case of South Florida [with Gary D. Lynne]. Water Resources Bulletin, 30(1):19-26 (February 1994).

[1] Marketing Margins and Losses in Bolivia [with Edwin Cardona]. Tropical Science, 27(1):91-99 (February 1987).