Watson, S. W. (1971). Taxonomic considerations of the family Nitrobacteriaceae Buchanan. Requests for opinions.. <i> Int.J.Syst.Bacteriol. </i><b> 21 </b>: 254-270 .
Winslow, C. E. A., Broadhurst, J., Buchanan, R. E., Jr., K. C., Rogers, L. A., Smith, G. H. (1917). The families and the genera of the bacteria. Preliminary report of the Committee of the Society of American Bacteriologists on characterization and classification of bacterial types. <i> J.Bacteriol. </i><b> 2 </b>: 505-566 .

Ehrich, S., Behrens, D., Lebedeva, E., Ludwig, W., Bock, E. (1995). A new obligately chemolithotrophic, nitrite-oxidizing bacterium, <i>Nitrospira moscoviensis</i> sp. nov. and its phylogenetic relationship. <i> Arch.Microbiol. </i><b> 164 </b>: 16-23 .
(2001). Validation of publication of new names and new combinations previously effectively published outside the IJSEM. List No. 78. <i> Int.J.Syst.Evol.Microbiol. </i><b> 51 </b>: 1-2 .

Yassin, A. F., Rainey, F. A., Mendrock, U., Brzezinka, H., Schaal, K. P. (2000). <i>Nocardia abscessus</i> sp. nov. <i> Int.J.Syst.Evol.Microbiol. </i><b> 50 </b>: 1487-1493 .

(2001). Validation of publication of new names and new combinations previously effectively published outside the IJSEM. List No. 81. <i> Int.J.Syst.Evol.Microbiol. </i><b> 51 </b>: 1229 .
Hamid, M. E., Maldonado, L. A., Sharaf Eldin, G. S., Mohamed, M. F., Saeed, N. S., Goodfellow, M. (2001). <i>Nocardia africana</i> sp. nov., a new pathogen isolated from patients with pulmonary infections. <i> J.Clin.Microbiol. </i><b> 39 </b>: 625-630 .

Li, W. J., Jiang, Y., Kroppenstedt, R. M., Xu, L. H., Jiang, C. L. (2004). <i>Nocardia alba</i> sp. nov., a novel actinomycete strain isolated from soil in China. <i> Syst.Appl.Microbiol. </i><b> 27 </b>: 308-312 .
(2004). Validation of publication of new names and new combinations previously effectively published outside the IJSEM. List No. 99. <i> Int.J.Syst.Evol.Microbiol. </i><b> 54 </b>: 1425-1426 .

Jurado, V., Boiron, P., Kroppenstedt, R. M., Laurent, F., Couble, A., Laiz, L., Klenk, H. P., González, J. M., Saiz-Jimenez, C., Mouniée, D., Bergeron, E., Rodríguez-Nava, V. (2008). <i>Nocardia altamirensis</i> sp. nov., isolated from Altamira cave, Cantabria, Spain. <i> Int J Syst Evol Microbiol. </i><b> 58 </b> ( Pt 9 ): 2210-2214 .