Random Sierpinski network with scale-free small-world and modular structure Zhongzhi Zhang, Shuigeng Zhou, Zhan Su, Tao Zou and Jihong Guan Eur. Phys. J. B, 65 1 (2008) 141-147 Published online: 30 July 2008 DOI: 10.1140/epjb/e2008-00305-8