Romer, C. and Bernstein, J. (2009), »The Job Impact of the American Recovery and Reinvestment Plan», http://otrans.3cdn.net/45593e8ecbd339d074_l3m6bt1te.pdf.
Romer, C. and Romer, D. H. (2010), »The Macroeconomic Effects of Tax Changes: Estimates Based on a New Measure of Fiscal Shocks», American...
Roodman, D. (2009), »How to do xtabond2: An introduction to difference and system GMM in Stata». Stata Journal 9(1): 86-136.