Paterson, Trevor, Kennedy, Jessie, Pullan, Martin R, Cannon, Alan, Armstrong, Kate E, Watson, Mark F, Raguenaud, Cedric, McDonald, Sarah M and Russell, Gordon (2004) A universal character model and ontology of defined terms for taxonomic description. In: Data Integration in the Life Sciences. First International Workshop, DILS 2004, 25th-26th March 2004, Leipzig, Germany.