Hermelin, Danny Algorithms and Complexity, MPI for Informatics, Max Planck Society;
Fellows, M. R., Fertin, G., Hermelin, D., & Vialette, S. (2011). Upper and Lower Bounds for Finding Connected Motifs in Vertex-colored Graphs. Journal of Computer and System Sciences, 77(4), 799-811. doi:10.1016/j.jcss.2010.07.003.