 For a self-similar structure, a power-law relation is expected rather than the exponential relation above.From this fact, it would seem that the small-world networks are not self-similar under a length-scale transformation.However, analysis of a variety of real complex networks shows they are self-similar on all length scales, a conclusion derived from measuring a power-law relation between the number of boxes needed to cover the network and the size of the box, so called fractal scaling.