Vincent Lacroix Cristina G. Fernandes Marie-France Sagot Motif Search in Graphs: Application to Metabolic Networks. 360-368 2006 3 IEEE/ACM Trans. Comput. Biology Bioinform. 4 http://doi.ieeecomputersociety.org/10.1109/TCBB.2006.55 db/journals/tcbb/tcbb3.html#LacroixFS06