In this article we define measurable multifunctions in nonseparable Ba
nach spaces, prove a weak compactness criterion for the selectors of m
ultifunctions integrably bounded, characterize Banach spaces that have
the Radon-Nikodym property by means of convergence of multivalued mar
tingales, generalize some recent results on convergence of set-valued
conditional expectations, and give some applications to control theory
and differential inclusions.