Giorgos Flouris Dimitris Manakanatas Haridimos Kondylakis Dimitris Plexousakis Grigoris Antoniou Ontology change: classification and survey. 117-152 2008 23 Knowledge Eng. Review 2 http://dx.doi.org/10.1017/S0269888908001367 db/journals/ker/ker23.html#FlourisMKPA08