Holmes, B., Steigerwalt, A. G., Weaver, R. E., Brenner, D. J. (1986). <i>Weeksella zoohelcum</i> sp.nov. (formerly group IIj) from human clinical specimens. <i> Syst.Appl.Microbiol. </i><b> 8 </b>: 191-196 .
Vandamme, P., Bernardet, J. F., Segers, P., Kersters, K., Holmes, B. (1994). New perspectives in the classification of the flavobacteria: description of <i>Chryseobacterium</i> gen. nov., <i>Bergeyella</i> gen. nov., and <i>Empedobacter</i> nom. rev. <i> Int.J.Syst.Bacteriol. </i><b> 44 </b>: 827-831 .
(1987). Validation of the publication of new names and new combinations previously effectively published outside the IJSB. List No. 23. <i> Int.J.Syst.Bacteriol. </i><b> 37 </b>: 179-180 .

Groth, I., Schumann, P., Schuetze, B., Augsten, K., Kramer, I., Stackebrandt, E. (1999). <i>Beutenbergia cavernae</i> gen. nov., sp. nov., an L-lysine-containing actinomycete isolated from a cave. <i> Int.J.Syst.Bacteriol. </i><b> 49 </b>: 1733-1740 .

Reuter, G. (1971). Designation of type strains for Bifidobacterium species. <i> Int.J.Syst.Bacteriol. </i><b> 21 </b>: 273-275 .
Reuter, G. (1963). Vergleichenden Untersuchung über die Bifidus-Flora im Sauglings und Erwachsenenstuhl. <i> Zentralbl.Bakteriol.Hyg.I Abt. </i><b> 191 </b>: 486-507 .

Scardovi, V., Crociani, F. (1974). <i>Bifidobacterium catenulatum</i>, <i>Bifidobacterium dentium</i>, and <i>Bifidobacterium angulatum</i>: three new species and their deoxyribonucleic acid homology relationships. <i> Int.J.Syst.Bacteriol. </i><b> 24 </b>: 6-20 .

Masco, L., Ventura, M., Zink, R., Huys, G., Swings, J. (2004). Polyphasic taxonomic analysis of <i>Bifidobacterium animalis</i> and <i>Bifidobacterium lactis</i> reveals relatedness at the subspecies level: reclassification of <i>Bifidobacterium animalis</i> as <i>Bifidobacterium animalis</i> subsp. <i>animalis</i> subsp. nov. and <i>Bifidobacterium lactis</i> as <i>Bifidobacterium animalis</i> subsp. <i>lactis</i> subsp. nov. <i> Int.J.Syst.Evol.Microbiol. </i><b> 54 </b>: 1137-1143 .
Scardovi, V., Trovatelli, L. D. (1974). <i>Bifidobacterium animalis</i> (Mitsuoka) comb. nov. and the "minimum" and "subtile" groups of new bifidobacteria found in sewage. <i> Int.J.Syst.Bacteriol. </i><b> 24 </b>: 21-28 .
(1958). Public Health Laboratory Service, Committee on Formaldehyde Disinfection. <i> J.Hyg. </i><b> 56 </b>: 488 .
Mitsuoka, T. (1969). Vergleichende Untersuchungen über die Bifidobakterien aus dem Verdauungstrakt von Menschen und Tieren. <i> Zentralbl.Bakteriol.Parasitenkd.Orig.Abt.I </i><b> 210 </b>: 52-64 .