Estimation of Production Functions

Estimation of production functions by the Olley-Pakes, Levinsohn-Petrin and Wooldridge methodologies. The package aims to reproduce the results obtained with the Stata's user written opreg < http://www.stata-journal.com/article.html?article=st0145> and levpet < http://www.stata-journal.com/article.html?article=st0060> commands. The first was originally proposed by Olley, G.S. and Pakes, A. (1996) . The second by Levinsohn, J. and Petrin, A. (2003) . And the third by Wooldridge (2009) .