Sporns, O. and Kötter, R.: Motifs in Brain Networks, PLoS Biology, Vol.2, No.11, pp.1910-1918 (2004).
Castillo, C., Donato, D., Gionis, A., Murdock, V. and Silvestri, F.: Know your neighbors: Web spam detection using the web topology, Proc. 30th Annual International ACM SIGIR Conference on Research and Development in Information Retrieval, pp.423-430 (2007).