● Kawamura Y,Hou XG,Sultana F,Liu S,Yamamoto H,Ezaki T (1995). Transfer of Streptococcus adjacens and Streptococcus defectivus to Abiotrophia gen. nov. as Abiotrophia adiacens comb. nov. and Abiotrophia defectiva comb. nov., respectively. Int. J. Syst. Bacteriol.45, 798-803.