Alan L. Rector Chris Wroe Jeremy Rogers Angus Roberts Untangling taxonomies and relationships: personal and practical problems in loosely coupled development of large ontologies. 139-146 2001 conf/kcap/2001 K-CAP http://doi.acm.org/10.1145/500737.500760 db/conf/kcap/kcap2001.html#RectorWRR01