Cefis, Elena; Gabriele, Roberto - Laboratory of Economics and Management (LEM), Scuola … - 2005
selection, two-stage Heckman estimator.
JEL-Codes: C34, J23, L11.
∗We would like to thank Rob Alessie, Giovanni Dosi …
correcting estimation results, we use an alternative econometric model: a modified two stages Heckman
estimator (HMM), which …