There's not a whole lot of material about the Julia set itself. When he talks about "folding" the Julia set, I immediately thought of this picture of some frac

There's not a whole lot of material about the Julia set itself. When he talks about "folding" the Julia set, I immediately thought of this picture of some fractions http://i.imgur.com/wxz2a3t.png http://i.imgur.com/wxz2a3t.png from this paper: http://arxiv.org/abs/1201.4225v1 http://arxiv.org/abs/1201.4225v1