Ochiai, S., Adachi, Y., Mori, K. (1997). Unification of the genera <i>Serpulina</i> and <i>Brachyspira</i>, and proposal of <i>Brachyspira hoydysenteriae</i> comb. nov., <i>Brachyspira innocens</i> comb. nov. and <i>Brachyspira pilosicoli</i> comb. nov. <i> Microbiol.Immunol. </i><b> 41 </b>: 445-452 .
Hovind-Hougen, K., Birch-Andersen, A., Henrik-Nielsen, R., Orholm, M., Pedersen, J. O., Teglbjaerg, P. S., Thaysen, E. H. (1983). Intestinal spirochetosis: morphological characterization and cultivation of the spirochete <i>Braychyspira aalborgi</i> gen. nov. sp. nov. <i> J.Clin.Microbiol. </i><b> 16 </b>: 1127-1136 .
(1983). Validation of the publication of new names and new combinations previously effectively published outside the IJSB. List No. 12. <i> Int.J.Syst.Bacteriol. </i><b> 33 </b>: 896-897 .

Stanton, T. B., Postic, D., Jensen, N. S. (1998). <i>Serpulina alvinipulli</i> sp. nov., a new <i>Serpulina</i> species that is enteropathogenic for chickens. <i> Int.J.Syst.Bacteriol. </i><b> 48 </b>: 669-676 .

Harris, D. L., Glock, R. D., Christensen, C. R., Kinyon, J. M. (1972). Swine dysentery. 1. Inoculation of pigs with <i>Treponema hyodysenteriae</i> (new species) and reproduction of the disease. <i> Vet.Med.Small Animal.Clin. </i><b> 67 </b>: 61-64 .
Stanton, T. B., Jensen, N. S., Casey, T. A., Tordoff, L. A., Dewhirst, F. E., Paster, B. J. (1991). Reclassification of <i>Treponema hyodysenteriae</i> and <i>Treponema innocens</i> in a new genus, <i>Serpula</i> gen. nov., as <i>Serpula hyodysenteriae</i> comb. nov. and <i>Serpula innocens</i> comb. nov. <i> Int.J.Syst.Bacteriol. </i><b> 41 </b>: 50-58 .
Ochiai, S., Adachi, Y., Mori, K. (1997). Unification of the genera <i>Serpulina</i> and <i>Brachyspira</i>, and proposal of <i>Brachyspira hoydysenteriae</i> comb. nov., <i>Brachyspira innocens</i> comb. nov. and <i>Brachyspira pilosicoli</i> comb. nov. <i> Microbiol.Immunol. </i><b> 41 </b>: 445-452 .
(1998). Validation of the publication of new names and new combinations previously effectively published outside the IJSB. List No. 64. <i> Int.J.Syst.Bacteriol. </i><b> 48 </b>: 327-328 .