↑ Paul M. Romer: Dynamic competitive equilibria with externalities, increasing returns and unbounded growth. Dissertation, University of Chicago, 1983, später als Paul M. Romer: Increasing Returns and Long-Run Growth. In: Journal of Political Economy. Band 94, Nr. 5, Oktober 1986, S. 1002–1037, JSTOR.
↑ Paul M. Romer: Endogenous Technological Change. In: Journal of Political Economy. Band 98, Nr. 5, Teil 2, Oktober 1990, S. S71–S102, JSTOR
