● Hampson DJ,La T (2006). Reclassification of Serpulina intermedia and Serpulina murdochii in the genus Brachyspira as Brachyspira intermedia comb. nov. and Brachyspira murdochii comb. nov. Int. J. Syst. Evol. Microbiol.56, 1009-12. ● Stanton TB,Fournié-Amazouz E,Postic D,Trott DJ,Grimont PA,Baranton G,Hampson DJ,Saint Girons I (1997). Recognition of two new species of intestinal spirochetes: Serpulina intermedia sp. nov. and Serpulina murdochii sp. nov. Int. J. Syst. Bacteriol.47, 1007-12.