Fractal and multifractal analysis of complex networks: Estonian network of payments Stephanie Rendón de la Torre, Jaan Kalda, Robert Kitt and Jüri Engelbrecht Eur. Phys. J. B, 90 12 (2017) 234 Published online: 04 December 2017 DOI: 10.1140/epjb/e2017-80214-5