?===================================================================

? 2 factor CES production function by nonlinear least squares      =

? Assumes output is Q and factors are K and L                      =

? Starting values obtained by OLS for Cobb-Douglas model           =

?===================================================================

       REGRESS       ; Lhs = log(Q) ; Rhs = ONE,log(K),Log(L) $

       CALC          ; dkl = b(2)/(b(2)+b(3)), sc=b(2)+b(3) $

       NLSQ          ; Lhs = Q  

                     ; LABELS = gamma,delta,r,nu 

                     ; FCN =    gamma * (delta*K^(-r) +

                                        (1-delta)*L^(-r)) ^ (-nu/r)

                     ; Start = b(1),dkl,1,sc $