Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) COYKENDALL A. L.,"Proposal to elevate the subspecies of Streptococcus mutans to species status, based on their molecular composition",Int. J. Sys. Bacteriol.,,,1977,27,,26-30,https://cir.nii.ac.jp/crid/1571698600181031168,