Berendsohn, Walter G. (1995). "The Concept of "Potential Taxa" in Databases". Taxon. 44 (2): 207–212. doi:10.2307/1222443. JSTOR1222443.
Kennedy, J.; Hyam, R.; Kukla, R.; Paterson, T. (2006). "Standard Data Model Representation for Taxonomic Information". OMICS: A Journal of Integrative Biology. 10 (2): 220–230. doi:10.1089/omi.2006.10.220. PMID16901230.
Kennedy, J.; Hyam, R.; Kukla, R.; Paterson, T. (2006). "Standard Data Model Representation for Taxonomic Information". OMICS: A Journal of Integrative Biology. 10 (2): 220–230. doi:10.1089/omi.2006.10.220. PMID16901230.