Dufour, Jean Marie; TAAMOUTI, Mohamed (Université de Montréal. Département de sciences économiques., 2003)
It is well known that standard asymptotic theory is not valid or is extremely unreliable in models with identification problems or weak instruments [Dufour (1997, Econometrica), Staiger and Stock (1997, Econometrica), Wang and Zivot (1998, Econometrica), ...