W. Bergweiler et N. Terglane, WEAKLY REPELLING FIXPOINTS AND THE CONNECTIVITY OF WANDERING DOMAINS, Transactions of the American Mathematical Society, 348(1), 1996, pp. 1-12
It is proved that if a transcendental meromorphic function f has a mul
tiply-connected wandering domain, then f has a fixpoint z(0) such that
\f'(z(0))\ > 1 or f' (z(0)) = 1. Entire functions with a multiply-con
nected wandering domain have infinitely many such fixpoints. These res
ults are used to show that solutions of certain differential equations
do not have wandering domains at all.