... PCk) of /? has the generic form P(k)= {r;[k(P ,-~ ~,)+(l-k,Q,,]YZ } -& apos; x{r;[k(P,-P,,)+(l-k)Q,,]y,} = [kA**(~Z)+(1-k)A22(~) 1- [ka,,(~,)+(1-k)a,,(~)l. (3.17) The LIML estimator, &tML, of ... minimizes the ratio PdfwP* PdA&)P, Pd WI& Pd[A(I)-A(P =‘+ &[A(I)-A(Pz)]& =‘+ /%% ’ say’ (3.18) where /3d = (1, - /3’) and PLIM,_ satisfies the system {A(I)-h[A(I)-A(Pz)]}p,=O, ... the IV estimators of the subvectors p and y: YN = tz;pHz, )- z;pfft~l - %&Vh Prv= (r;[p,-p,Z,(Z;p,Z, )- Z;p,]y,j-’ ~{Y;[~ ,-~ ,~l~~;~,~l ~- ~;~,]Y,). (3.9) (3.10) In the usual case where...