Whiley RA, Russell RRB, Hardie JM, Beighton D. Streptococcus downei sp. nov. for strains previously described as Streptococcus mutans serotype h. Int. J. Syst. Bacteriol. 1988; 38:25-29.
validly published under the ICNP
Formerly Streptococcus mutans serotype h.Publication:
Clarke JK. On the bacterial factor in the aetiology of dental caries. British Journal of Experimental Pathology 1924; 5:141-147.