panel data models where the observables are affected by common shocks, modelled through unobservable factors, are studied … the panel TSLS and LIML estimators, as the cross section dimension tends to infinity, is the lack of correlation between … shocks. If this condition fails, both estimators have degenerate distributions. When the panel TSLS and LIML estimators are …

. Next, we examine models for multiple durations. In the applied econometric literature on the estimation of multiple … linked to particular estimation strategies. The multiple-duration model where the marginal duration distributions each …