Title: Essentially Finite Vector Bundles on Normal Pseudo-proper Algebraic Stacks,
Abstract: Let $X$ be a normal, connected and projective variety over an algebraically
closed field $k$. It is known that a vector bundle $V$ on $X$ is essentially
finite if and only if it is trivialized by a proper surjective morphism $f:Y\to
X$. In this paper we introduce a different approach to this problem which
allows to extend the results to normal, connected and strongly pseudo-proper
algebraic stack of finite type over an arbitrary field $k$.