Estimation of Production Functions R package estprod version 1.2 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) <doi:10.2307/2171831>. The second by Levinsohn, J. and Petrin, A. (2003) <doi:10.1111/1467-937X.00246>. And the third by Wooldridge (2009) <doi:10.1016/j.econlet.2009.04.026>. Software Depends: R (>= 3.0) Imports: lazyeval, boot, minpack.lm, Formula, gmm Rodrigo R Remédio <rremedio@hotmail.com> Comprehensive R Archive Network (CRAN) Rodrigo R Remédio [aut, cre] GPL-3 2020-07-20 application/tgz https://CRAN.R-project.org/package=estprod doi:10.32614/CRAN.package.estprod