Dear. All I am struggling how to get the coefficient from the SUR or system estimation. I know that, In case of simple regression, If I want to get the coefficient to recycle it, Y cosnt X1 X2 after the regression, we could get the coefficient from following command genr aaa = $coeff(X1) genr aaa =$coeff(const) However, I could not find how to get the coefficients from SUR or System estimation for example, in the following SUR estimation ================================================ system name="Rotterdam" equation wdq1 DivisiaQ ddp1 ddp2 ddp3 equation wdq2 DivisiaQ ddp1 ddp2 ddp3 equation wdq3 DivisiaQ ddp1 ddp2 ddp3 end system restrict "Rotterdam" b[1,3]-b[2,2]=0 b[1,4]-b[3,2]=0 b[2,4]-b[3,3]=0 end restrict estimate "Rotterdam" method=sur --iterate estimate "Rotterdam" method=3sls --iterate =================================================== Any suggestions? Sincerely Sung Jin Lim