This paper deals with univalent
harmonic mappings of annuli onto punctured bounded convex domains.
Several aspects of these mappings are investigated; in particular, boundary
functions, existence and uniquenss questions, and the geometry of their analytic
and (co-analytic) parts. The paper also considers univalence criteria for
Dirichlet solutions in annuli of boundary functions that are a generalized type of
homeomorphisms, called quasihomeomorphisms, on one boundary component and
constants on the other.