DIJKSTRA, Theo; WANSBEEK, Tom - In: Annales d'Economie et de Statistique (1990) 17, pp. 205-209
Holly and Magnus [1988] show that the IV estimator in a linear equation is asymptotically as efficient as the ML estimator in the model that is obtained by "completing" this equation to a complete equations system. Their proof is long and involves many matrix manipulations. A simpler approach is...