Vázquez, Alexei ; Gama Oliveira, João ; Dezsö, Zoltán ; Goh, Kwang-Il ; Kondor, Imre ; Barabási, Albert-László: Modeling bursts and heavy tails in human dynamics. In: Physical Review E, 73 (2006), Nr. 3, S. 036127

Kondor, Risi Imre ; Lafferty, John D.: Diffusion Kernels on Graphs and Other Discrete Input Spaces. In: ICML '02: Proceedings of the Nineteenth International Conference on Machine Learning. San Francisco, CA, USA : Morgan Kaufmann Publishers Inc., 2002. - ISBN 1-55860-873-7, S. 315--322