Borgwardt, Karsten Department Molecular Biology, Max Planck Institute for Developmental Biology, Max Planck Society;
http://jmlr.org/papers/v12/shervashidze11a.html (Any fulltext)
Shervashidze, N., Schweitzer, P., Leeuwen, E. J. v., Mehlhorn, K., & Borgwardt, K. (2011). Weisfeiler-Lehman Graph Kernels. Journal of Machine Learning Research, 12(77), 2539-2561.