$\lambda$-Lemma for families of Riemann surfaces and the critical loci   of complex H\'enon maps
  We prove a version of the classical $\lambda$-lemma for holomorphic families of Riemann surfaces. We then use it to show that critical loci for complex H\'{e}non maps that are small perturbations of quadratic polynomials with Cantor Julia sets are all quasiconformally equivalent. 
Tanya Firsova and Mikhail Lyubich
math.DS math.CV