Larry Kerschberg Hanjo Jeong Wooju Kim Emergent Semantics in Knowledge Sifter: An Evolutionary Search Agent Based on Semantic Web Services. 187-209 2006 journals/jods/2006-6 J. Data Semantics VI http://dx.doi.org/10.1007/11803034_9 db/journals/jods/jods6.html#KerschbergJK06