This paper is concerned with the estimation of cointegrated systems with integrated variables of order greater than 1. Unlike the case of I(1) variables, there are various possibilities of cointegration in the higher order case, which were conveniently formulated in a triangular representation...

In this paper we investigate the robustness properties of the class of minimum power divergence estimators for grouped data. This class contains the classical maximum likelihood estimators for grouped data. We find that the bias of these estimators due to deviations from the assumed underlying...

Dans ce papier nous analysons le problème de l'estimation d'une fonction de distance radiale. Comme les distances à la frontiere ne sont pas observées, il faut choisir une variable représentative. Ce choix est crucial car, non seulement il influence les résultats des distances estimées,...

In this paper we analyze the robustness properties of GMM estimators and GMM based tests, in view of an application to the robust estimation and comparison of some well known one factor models of the term structure of interest rates. We show that GMM estimators and tests are robust if and only...