Title: An Edgeworth expansion for the m out of n bootstrapped median.
Authors: Anat Sakov and  Peter J. Bickel.
Date: July 1998
Abstract:
It is well known Singh (1981) that the bootstrap distribution of
the median has the correct limiting distribution. In this note we prove
the existence of the next term in the Edgeworth expansion if the
bootstrap sample size is m = o(n).