Shewmaker, P.L., Steigerwalt, A.G., Nicholson, A.C., Carvalho, M.G.S., Facklam, R.R., Whitney, A.M., Teixeira, L.M. 2011. Reevaluation of the taxonomic status of recently described species of Enterococcus: evidence that E. thailandicus is a senior subjective synonym of E. sanguinicola and confirmation of E. caccae as a species distinct from E. silesiacus. Journal of Clinical Microbiology. 49 : 2676-2679.