Abadie, Alberto; Imbens, Guido - 2009
been derived only for particular cases (Abadie and Imbens, 2006). This article establishes a martingale representation for … matching estimators. This representation allows the use of martingale limit theorems to derive the asymptotic distribution of … matching estimators. As an illustration of the applicability of the theory, we derive the asymptotic distribution of a matching …