Takada, K., Hirasawa, M. (2007). <i>Streptococcus orisuis</i> sp. nov., isolated from the pig oral cavity. <i> Int.J.Syst.Evol.Microbiol. </i><b> 57 </b>: 1272-1275 .

Rurangirwa, F. R., Teitzel, C. A., Cui, J., French, D. M., McDonough, P. L., Besser, T. (2000). <i>Streptococcus didelphis</i> sp. nov., a streptococcus with marked catalase activity isolated from opossums (<i>Didelphis virginiana</i>) with suppurative dermatitis and liver fibrosis. <i> Int.J.Syst.Evol.Microbiol. </i><b> 50 </b>: 759-765 .

Kawamura, Y., Itoh, Y., Mishima, N., Ohkusu, K., Kasai, H., Ezaki, T. (2005). High genetic similarity of <i>Streptococcus agalactiae</i> and <i>Streptococcus difficilis</i>: <i>S. difficilis</i> Eldar et al. 1995 is a later synonym of <i>S. agalactiae</i> Lehmann and Neumann 1896 (Approved Lists 1980). <i> Int.J.Syst.Evol.Microbiol. </i><b> 55 </b>: 961-965 .
Eldar, A., Bejerano, Y., Bercovier, H. (1994). <i>Streptococcus shiloi</i> and <i>Streptococcus difficile</i>: two new streptococcal species causing a menningoencephalitis in fish. <i> Curr.Microbiol. </i><b> 28 </b>: 139-142 .
(1995). Validation of the publication of new names and new combinations previously effectively published outside the IJSB. List No. 52. <i> Int.J.Syst.Bacteriol. </i><b> 45 </b>: 197-198 .

Whiley, R. A., Russell, R. R. B., Hardie, J. M., Beighton, D. (1988). <i>Streptococcus downei </i>sp. nov. for strains previously described as <i>Streptococcus mutans </i>serotyp h. <i> Int.J.Syst.Bacteriol. </i><b> 38 </b>: 25-29 .

Garvie, E. I., Farrow, J. A. E., Bramley, A. J. (1983). <i>Streptococcus dysgalactiae</i> (Diernhofer) nom. rev. <i> Int.J.Syst.Bacteriol. </i><b> 33 </b>: 404-405 .

Garvie, E. I., Farrow, J. A. E., Bramley, A. J. (1983). <i>Streptococcus dysgalactiae</i> (Diernhofer) nom. rev. <i> Int.J.Syst.Bacteriol. </i><b> 33 </b>: 404-405 .
Vieira, V. V., Teixeira, L. M., Zahner, V., Momen, H., Facklam, R. R., Steigerwalt, A. G., Brenner, D. J., Castro, A. C. D. (1998). Genetic relationships among the different phenotypes of <i>Streptococcus dysgalactiae</i> strains. <i> Int.J.Syst.Bacteriol. </i><b> 48 </b>: 1231-1243 .
Vandamme, P., Pot, B., Falsen, E., Kersters, K., Devriese, L. A. (1996). Taxonomic study of Lancefield streptococcal groups C, G, and L (<i>Streptococcus dysgalactiae</i>) and proposal of<i> S</i>. <i>dysgalactiae</i> subsp. <i>equisimilis</i> subsp. nov. <i> Int.J.Syst.Bacteriol. </i><b> 46 </b>: 774-781 .