systemfit (version 1.1-30)
Estimating Systems of Simultaneous Equations
Description
Econometric estimation of simultaneous
systems of linear and nonlinear equations using Ordinary Least
Squares (OLS), Weighted Least Squares (WLS), Seemingly Unrelated
Regressions (SUR), Two-Stage Least Squares (2SLS), Weighted
Two-Stage Least Squares (W2SLS), and Three-Stage Least Squares (3SLS)
as suggested, e.g., by Zellner (1962) ,
Zellner and Theil (1962) , and
Schmidt (1990) .