Michael L. Blinov Jin Yang James R. Faeder William S. Hlavacek Graph Theory for Rule-Based Modeling of Biochemical Networks. 89-106 2006 journals/tcsb/2006-7 T. Comp. Sys. Biology http://dx.doi.org/10.1007/11905455_5 db/journals/tcsb/tcsb7.html#BlinovYFH06