Chao, John C.; Phillips, Peter C. B. - In: Econometrics : open access journal 7 (2019) 4/45, pp. 1-28
-Hsiao (AH) IV procedure. It is well known that the AH IV estimation suffers from weak instrumentation when p is near unity. But … it is not so well known that AH IV estimation is still consistent when p = 1. In fact, the AH estimating equation is very … extensive set of new results on the asymptotic behavior of panel IV estimators in weak instrument settings. …