The asymptotic consistency of the bootstrap approximation of the vecto
r of the marginal generalized quantiles of U-statistic structure (mult
ivariate U-quantiles for short) is established. The asymptotic accurac
y of the bootstrap approximation is also obtained. Extensions to smoot
h functions of marginal generalized quantiles are given and some speci
fic examples, such as the vector of marginal sample quantiles and the
vector of marginal Hodges-Lehmann location estimators, are discussed.
(C) 1994 Academic Press, Inc.